This PowerPoint is one small part of my Laws of Motion and Simple Machines entire unit. A 3 Part 2,000+ Slide PowerPoint 15 Page bundled homework package and 11 pages of units notes that chronologically follow the PowerPoint 2 PowerPoint review games, 20 Videos / Links, rubrics, games, activity sheets, and more. http://www.sciencepowerpoint.com/Newtons_Laws_Motion_Machines_Unit.html

More Units Available at… Earth Science: The Soil Science and Glaciers Unit, The Geology Topics Unit, The Astronomy Topics Unit, The Weather and Climate Unit, and The River Unit, The Water Molecule Unit. Physical Science: The Laws of Motion and Machines Unit, The Atoms and Periodic Table Unit, The Energy and the Environment Unit, and The Introduction to Science / Metric Unit. Life Science: The Diseases and Cells Unit, The DNA and Genetics Unit, The Life Topics Unit, The Plant Unit, The Taxonomy and Classification Unit, Ecology: Feeding Levels Unit, Ecology: Interactions Unit, Ecology: Abiotic Factors, The Evolution and Natural Selection Unit and the Human Body Systems and Health Topics Unit Copyright © 2011 www.sciencepowerpoint.com LLC.

Machines Part III

RED SLIDE: These are notes that are very important and should be recorded in your science journal. Copyright © 2010 Ryan P. Murphy

-Nice neat notes that are legible and use indentations when appropriate.

-Nice neat notes that are legible and use indentations when appropriate. -Example of indent.

-Nice neat notes that are legible and use indentations when appropriate. -Example of indent. -Skip a line between topics

-Nice neat notes that are legible and use indentations when appropriate. -Example of indent. -Skip a line between topics -Make visuals clear and well drawn.

-Nice neat notes that are legible and use indentations when appropriate. -Example of indent. -Skip a line between topics -Make visuals clear and well drawn. Please label. Lever Resistance Arm Effort Arm

RED SLIDE: These are notes that are very important and should be recorded in your science journal. BLACK SLIDE: Pay attention, follow directions, complete projects as described and answer required questions neatly. Copyright © 2010 Ryan P. Murphy

Keep an eye out for “The-Owl” and raise your hand as soon as you see him. He will be hiding somewhere in the slideshow Copyright © 2010 Ryan P. Murphy

“Hoot, Hoot” “Good Luck!” Keep an eye out for “The-Owl” and raise your hand as soon as you see him. He will be hiding somewhere in the slideshow “Hoot, Hoot” “Good Luck!” Copyright © 2010 Ryan P. Murphy

Machines Part III

This preview will begin 200 slides into the lesson.

Activity: Ancient use of Simple Machines. Use PVC piping to move an upside down lab table and some people sitting on it down the hall. Copyright © 2010 Ryan P. Murphy

Set-up of challenge. Move pipes from the rear to the front before the table moves. How efficient can your group work?

Please reflect upon the activity. What type of machine was used? Did it help? Copyright © 2010 Ryan P. Murphy

Mechanical advantage (MA): The number of times a machine multiplies your effort force. Copyright © 2010 Ryan P. Murphy

To find MA Divide resistance force (usually weight in g) by the effort force (Newtons) Copyright © 2010 Ryan P. Murphy

To find MA Divide resistance force (usually weight in g) by the effort force (Newton) Copyright © 2010 Ryan P. Murphy

Output Force MA = --------- Input Force To find MA Divide resistance force (usually weight in g) by the effort force (Newton) Output Force MA = --------- Input Force Copyright © 2010 Ryan P. Murphy

Output Force MA = --------- Input Force To find MA Divide resistance force (usually weight in g) by the effort force (Newton) Output Force MA = --------- Input Force Copyright © 2010 Ryan P. Murphy

Output Force MA = --------- Input Force To find MA Divide resistance force (usually weight in g) by the effort force (Newton) Output Force MA = --------- Input Force Copyright © 2010 Ryan P. Murphy

Output Force MA = --------- = MA Input Force To find MA Divide resistance force (usually weight in g) by the effort force (Newton) Output Force MA = --------- = MA Input Force Copyright © 2010 Ryan P. Murphy

F Output Force O MA = --------- = MA Input Force To find MA Divide resistance force (usually weight in g) by the effort force (Newton) F Output Force O MA = --------- = MA Input Force Copyright © 2010 Ryan P. Murphy

F Output Force O MA = --------- = MA Input Force F I To find MA Divide resistance force (usually weight in g) by the effort force (Newton) F Output Force O MA = --------- = MA Input Force F I Copyright © 2010 Ryan P. Murphy

Find the MA of the following.

Find the MA of the following.

F O = MA F I Find the MA of the following. The work input was 2, and the output was 18. F O = MA F I

F 18 O = MA F 2 I Find the MA of the following. The work input was 2, and the output was 18. F 18 O = MA F 2 I

F 18 O = MA F 2 I Find the MA of the following. The work input was 2, and the output was 18. F 18 O = MA F 2 I

F 18 O 9 MA = MA F 2 I Find the MA of the following. The work input was 2, and the output was 18. F 18 O 9 MA = MA F 2 I

New Question

12 N 6 N

F 12 N O 6 N = MA F I

F 12 N O 6 N = MA F I

F 12 N 12 N O 6 N = MA F 6 N I

F 12 N 12 N O 6 N = 12 MA F 6 N I

New Question

20 N 40 N

= MA 20 N 40 N

F O = MA 20 N 40 N

F O = MA 20 N 40 N

F O 40 N = MA 20 N 40 N

F O 40 N = MA 20 N 40 N

F O 40 N = MA F 20 N I 20 N 40 N

F O 40 N = 2 MA F 20 N I 20 N 40 N

F O 40 N = 2 MA F 20 N I 20 N 40 N

Law Conservation of Energy

Law Conservation of Energy Energy cannot be created or destroyed.

Law Conservation of Energy Energy cannot be created or destroyed. Energy can be transferred.

Energy In = Energy Out Law Conservation of Energy Energy cannot be created or destroyed. Energy can be transferred. Energy In = Energy Out

Energy In = Energy Out Distances, Magnitude, Speed, Direction, Law Conservation of Energy Energy cannot be created or destroyed. Energy can be transferred. Energy In = Energy Out Distances, Magnitude, Speed, Direction, May Change

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

? Simple machines: Types of machines that do work with one movement. Copyright © 2010 Ryan P. Murphy

Simple machines: Types of machines that do work with one movement. Hydraulics Copyright © 2010 Ryan P. Murphy

Simple Machines Available Sheet: Pulleys

Pulley Uses grooved wheels and a rope to raise, lower or move a load. Copyright © 2010 Ryan P. Murphy

Pulley Uses grooved wheels and a rope to raise, lower or move a load. Copyright © 2010 Ryan P. Murphy

A pulley makes work seem easier Copyright © 2010 Ryan P. Murphy

A pulley makes work seem easier Copyright © 2010 Ryan P. Murphy

A pulley makes work seem easier Changes the direction of motion to work with gravity. Copyright © 2010 Ryan P. Murphy

A pulley makes work seem easier Changes the direction of motion to work with gravity. Instead of lifting up, you can pull down. Copyright © 2010 Ryan P. Murphy

A pulley makes work seem easier Changes the direction of motion to work with gravity. Instead of lifting up, you can pull down. Uses your body weight against the resistance. Copyright © 2010 Ryan P. Murphy

The more pulleys that are used, the more the MA (Mechanical Advantage). Copyright © 2010 Ryan P. Murphy

The more pulleys that are used, the more the MA (Mechanical Advantage). Copyright © 2010 Ryan P. Murphy

MA = The number of ropes that support the pulley MA = The number of ropes that support the pulley. The end of the rope doesn’t count. What is the MA of this pulley system below? Copyright © 2010 Ryan P. Murphy

MA = The number of ropes that support the pulley MA = The number of ropes that support the pulley. The end of the rope doesn’t count. What is the MA of this pulley system below? Copyright © 2010 Ryan P. Murphy

MA = The number of ropes that support the pulley MA = The number of ropes that support the pulley. The end of the rope doesn’t count. MA =2 What is the MA of this pulley system below? Copyright © 2010 Ryan P. Murphy

MA = The number of ropes that support the pulley MA = The number of ropes that support the pulley. The end of the rope doesn’t count. MA =2 What is the MA of this pulley system below? F I F O Copyright © 2010 Ryan P. Murphy

MA = The number of ropes that support the pulley MA = The number of ropes that support the pulley. The end of the rope doesn’t count. MA =2 What is the MA of this pulley system below? F O F I F I F O Copyright © 2010 Ryan P. Murphy

MA = The number of ropes that support the pulley MA = The number of ropes that support the pulley. The end of the rope doesn’t count. MA =2 What is the MA of this pulley system below? F 100 kg O F 50 kg I F I F O Copyright © 2010 Ryan P. Murphy

MA = The number of ropes that support the pulley MA = The number of ropes that support the pulley. The end of the rope doesn’t count. MA =2 What is the MA of this pulley system below? F 100 kg O = 2 MA F 50 kg I F I F O Copyright © 2010 Ryan P. Murphy

What is the MA of this pulley system? MA=2 Copyright © 2010 Ryan P. Murphy

Answer, the MA is 4. F I F O Copyright © 2010 Ryan P. Murphy

Answer, the MA is 4. F O F I F I F O Copyright © 2010 Ryan P. Murphy

F 100 O F 25 I F I F O Answer, the MA is 4. Copyright © 2010 Ryan P. Murphy

F 100 O = 4 MA F 25 I F I F O Answer, the MA is 4. Copyright © 2010 Ryan P. Murphy

What is the MA? ? ? ? ?

What is the MA? ? ? ? ?

What is the MA? NA ? ? ?

What is the MA? NA ? ? ?

What is the MA? NA 2 ? ?

What is the MA? NA 2 ? ?

What is the MA? NA 2 3 ?

What is the MA? NA 2 3 ?

What is the MA? NA 2 3 4

Pulley Simulator: (Optional) http://www.compassproject.net/sims/pulley.html

Three types of pulleys - Copyright © 2010 Ryan P. Murphy

Fixed pulley No MA Copyright © 2010 Ryan P. Murphy

Fixed pulley No MA Copyright © 2010 Ryan P. Murphy

Movable Pulley (MA of 2) Copyright © 2010 Ryan P. Murphy

Not easy to go upwards. Movable Pulley (MA of 2) Copyright © 2010 Ryan P. Murphy

Combined Pulley / Block and tackle Copyright © 2010 Ryan P. Murphy

Rock climbing uses pulleys. Copyright © 2010 Ryan P. Murphy

Rock climbing uses pulleys. Copyright © 2010 Ryan P. Murphy

Rock climbing uses pulleys. Copyright © 2010 Ryan P. Murphy

Sailing uses pulleys to ease difficult jobs. Copyright © 2010 Ryan P. Murphy

Pulleys

The chain on your bicycle is a pulley.

Quiz Wiz 1-10 Fixed Pulley, Moveable Pulley, Block and Tackle/Combined Pulley Copyright © 2010 Ryan P. Murphy

1 MA =

2 MA =

3 MA =

4 MA =

5 MA =

6 MA =

7 MA =

7 MA = Movable Pulley

8 MA =

9 MA =

10 MA =

* Bonus: Name this family that used simple machines to create a tree house?

Answers! Quiz Wiz 1-10 Fixed Pulley, Moveable Pulley, Block and Tackle/Combined Pulley Copyright © 2010 Ryan P. Murphy

1 MA =

1 MA = Combined Pulley / Block and Tackle

1 MA = Combined Pulley / Block and Tackle

2 1 MA = Combined Pulley / Block and Tackle

2 1 MA = 1 Combined Pulley / Block and Tackle

2 1 MA = 2 1 Combined Pulley / Block and Tackle

2 MA =

2 MA = Fixed Pulley

2 MA = Fixed Pulley

2 1 MA = Fixed Pulley (No MA)

3 MA =

3 Combined Pulley / Block and Tackle MA =

3 Combined Pulley / Block and Tackle MA =

3 Combined Pulley / Block and Tackle 4 MA =

3 Combined Pulley / Block and Tackle 1 4 MA =

3 Combined Pulley / Block and Tackle 1 2 4 MA =

3 Combined Pulley / Block and Tackle 1 2 3 4 MA =

3 4 Combined Pulley / Block and Tackle 1 2 3 4 MA =

4 MA =

4 MA = Movable Pulley

4 MA = Movable Pulley

4 2 MA = Movable Pulley

5 MA =

5 MA = Combined Pulley / Block and Tackle

5 MA = Combined Pulley / Block and Tackle

5 2 MA = Combined Pulley / Block and Tackle

5 2 MA = Combined Pulley / Block and Tackle 1

5 2 MA = Combined Pulley / Block and Tackle 1 2

6

6 Fixed Pulley

6 Fixed Pulley

6 Fixed Pulley F O F I

6 Fixed Pulley F 100 N O F 100 N I

6 Fixed Pulley F 100 N O = 1MA F 100 N I

6 Fixed Pulley F 100 N O = 1MA (No MA) F 100 N I

7 MA =

7 MA = Movable Pulley

7 MA = Movable Pulley

2 7 MA = Movable Pulley

2 7 MA = Movable Pulley

2 7 MA = Movable Pulley

2 7 MA = Movable Pulley

2 7 MA = Movable Pulley

8 MA =

8 MA = Movable Pulley

8 MA = Movable Pulley

8 2 MA = Movable Pulley

8 2 MA = Movable Pulley

8 2 MA = Movable Pulley

8 2 MA = Movable Pulley

9 MA =

9 MA = Combined Pulley / Block and Tackle

9 MA = Combined Pulley / Block and Tackle

3 9 MA = Combined Pulley / Block and Tackle

3 9 MA = Combined Pulley / Block and Tackle 1

3 9 MA = Combined Pulley / Block and Tackle 2 1

3 9 MA = Combined Pulley / Block and Tackle 2 3 1

10 MA =

10 Fixed Pulley MA =

10 Fixed Pulley MA =

10 Fixed Pulley 1 MA = (No MA)

* Bonus: Name this family that used simple machines to create a tree house?

* Bonus: Name this family that used simple machines to create a tree house?

Activity! Using the three types of Pulleys Copyright © 2010 Ryan P. Murphy

Top Pulley Bottom Pulley

Top Pulley Bottom Pulley

Top Pulley Bottom Pulley

Top Pulley Bottom Pulley

Top Pulley Bottom Pulley

Simple Machines Available Sheet.

Please create this spreadsheet in your journal. Weight (g) newtons No Pulley ____ grams Fixed Pulley Combined Pulley 2 Combined Pulley 4 Copyright © 2010 Ryan P. Murphy

Please use the materials to do the following. Measure the newtons required with a Spring Scale to lift the ____ grams of weight with the different pulleys described in the spreadsheet. Copyright © 2010 Ryan P. Murphy

Remember to zero your spring scale! Please use the materials to do the following. Measure the newtons required with a Spring Scale to lift the ____ grams of weight with the different pulleys described in the spreadsheet. Remember to zero your spring scale! Copyright © 2010 Ryan P. Murphy

Please use the materials to do the following. Record the newtons required with a Spring Scale to lift the ____ grams of weight with a fixed pulley.

Fixed Pulley System Construction

Fixed Pulley System Construction

Fixed Pulley System Construction

Fixed Pulley System Construction

Fixed Pulley System Construction

Fixed Pulley System Construction

Fixed Pulley System Construction

Please use the materials to do the following. Record the newtons with a combined pulley to lift the weight? Spring Scale Copyright © 2010 Ryan P. Murphy

Two Pulley System Construction

Two Pulley System Construction

Two Pulley System Construction

Two Pulley System Construction

Two Pulley System Construction

Two Pulley System Construction

Two Pulley System Construction

Two Pulley System Construction

Please use the materials to do the following. Record newtons with a combined pulley (4) to lift the ____ grams of weight?

4 Pulley System Construction

4 Pulley System Construction

4 Pulley System Construction Two wheels / Pulley

4 Pulley System Construction Two wheels / Pulley

4 Pulley System Construction

4 Pulley System Construction

If you don’t have double pulleys, you can still use 4 single pulley’s like so. Copyright © 2010 Ryan P. Murphy

Create a moveable pulley to lower the ___ gram weight into the bucket without touching it. Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a fixed pulley rather than no pulley at all? What was the advantage in Newtons to use a combined pulley over a fixed pulley? What was the advantage in Newtons to use a combined pulley (4) over a combined pulley (2)? Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a fixed pulley rather than no pulley at all? What was the advantage in newtons to use a combined pulley over a fixed pulley? What was the advantage in Newtons to use a combined pulley (4) over a combined pulley (2)? Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a fixed pulley rather than no pulley at all? What was the advantage in newtons to use a combined pulley over a fixed pulley? What was the advantage in newtons to use a combined pulley (4) over a combined pulley (2)? Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a fixed pulley rather than no pulley at all? What was the advantage in newtons to use a combined pulley over a fixed pulley? What was the advantage in newtons to use a combined pulley (4) over a combined pulley (2)? Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

Weight (g) Newton No Pulley ___ grams 5 newtons Fixed Pulley Combined Pulley 2 3 newtons? Combined Pulley 4 1 newtons? Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a fixed pulley rather than no pulley at all? Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a fixed pulley rather than no pulley at all? There was no Mechanical Advantage (MA) when using the fixed pulley. It was easier because you didn’t have to bend down. Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a combined pulley over a fixed pulley? Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a combined pulley over a fixed pulley? The combined pulley required less force (2 newtons) to lift the load. The Mechanical Advantage was 2 newtons. Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a combined pulley (4) over a combined pulley (2)? Copyright © 2010 Ryan P. Murphy

Questions? What was the advantage in newtons to use a combined pulley (4) over a combined pulley (2)? The (MA) was 4. It only took 1 newton to lift the load compared 3 newtons with the combined 2 pulley, and 5 newtons with no pulley at all. Copyright © 2010 Ryan P. Murphy

Questions? Did a moveable pulley allow you to move the load with minimal effort? Copyright © 2010 Ryan P. Murphy

Questions? Did a moveable pulley allow you to move the load with minimal effort? The pulley moved along the rope very easily. We were able to move the load easily once it was lifted. The pulley rolled down the rope because of it’s potential energy. Not very good for lifting. Copyright © 2010 Ryan P. Murphy

Who can find the lever?

Who can find the lever?

Simple Machines Available Sheet: Levers

Lever -  

Lever A stiff bar that rests on a support called a fulcrum which lifts or moves loads.  

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

F I F O MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

F I F O MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

MA = length of effort arm ÷ length of resistance arm. Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 6 Meters 3 meters Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. Effort Arm (6 meters) / 6 Meters 3 meters Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. Effort Arm (6 meters) / Resistance Arm (3 Meters) 6 Meters 3 meters Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. Effort Arm (6 meters) / Resistance Arm (3 Meters) = MA 2 6 Meters 3 meters Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 4 meters 12 meters Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 4 meters 12 meters Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 4 meters 12 meters Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 4 meters 12 meters 12 meters / 4 meters = Copyright © 2010 Ryan P. Murphy

What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 4 meters 12 meters 12 meters / 4 meters = MA 3 Copyright © 2010 Ryan P. Murphy

New Question

90 N 30 N What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 90 N 30 N Copyright © 2010 Ryan P. Murphy

90 N 30 N F O = MA F I What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 90 N 30 N F O = MA F I Copyright © 2010 Ryan P. Murphy

90 N 30 N F 90 N O = MA F I What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 90 N 30 N F 90 N O = MA F I Copyright © 2010 Ryan P. Murphy

90 N 30 N F 90 N O = MA F 30 N I What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 90 N 30 N F 90 N O = MA F 30 N I Copyright © 2010 Ryan P. Murphy

90 N 30 N F 90 N O = 3 MA F 30 N I What is the MA of this lever? MA = length of effort arm ÷ length of resistance arm. 90 N 30 N F 90 N O = 3 MA F 30 N I Copyright © 2010 Ryan P. Murphy

Video Link! Levers and skateboarding. http://www.youtube.com/watch?v=72ZNEactb-k

The 3 types of levers - Copyright © 2010 Ryan P. Murphy

Hundreds of more slides, activities, bundled homework, End of Preview Hundreds of more slides, activities, bundled homework, lesson notes, review games, video links, rubrics, answers keys, and much more on the full version.

Activity! Machines PowerPoint Review Game. Copyright © 2010 Ryan P. Murphy

This PowerPoint is one small part of my Laws of Motion and Simple Machines entire unit. A 3 Part 2,000+ Slide PowerPoint 15 Page bundled homework package and 11 pages of units notes that chronologically follow the PowerPoint 2 PowerPoint review games, 20 Videos / Links, rubrics, games, activity sheets, and more. http://www.sciencepowerpoint.com/Newtons_Laws_Motion_Machines_Unit.html

More Units Available at… Earth Science: The Soil Science and Glaciers Unit, The Geology Topics Unit, The Astronomy Topics Unit, The Weather and Climate Unit, and The River Unit, The Water Molecule Unit. Physical Science: The Laws of Motion and Machines Unit, The Atoms and Periodic Table Unit, The Energy and the Environment Unit, and The Introduction to Science / Metric Unit. Life Science: The Diseases and Cells Unit, The DNA and Genetics Unit, The Life Topics Unit, The Plant Unit, The Taxonomy and Classification Unit, Ecology: Feeding Levels Unit, Ecology: Interactions Unit, Ecology: Abiotic Factors, The Evolution and Natural Selection Unit and the Human Body Systems and Health Topics Unit Copyright © 2011 www.sciencepowerpoint.com LLC.