1. Put your name and today’s date on your paper Number from 1-7
Bellwork
Put your name and today’s date on your paper
Number from 1-7

2. 1. A student wants to test how the concentration of phosphorus in a fertilizer affects plant growth.
In designing this experiment the manipulated variable would most likely be the...?
a. height each plant grows after given fertilizer.
b. type of phosphorus used.
c. type of each plant used.
d. amount of phosphorus used per plant.

3. 3000mg = _____________g 3g
30g
.3g
30000g

4. Two students want to test how the amount of salt on McDonald’s french fries affects the blood pressure of 8th grade boys and girls that eat them. They conduct three trials with 5 boys and 5 girls.
On the following day with the same 10 students, they repeat the experiment over, but this time they make sure that the french fries do not have any salt on them at all.
What is the control experiment in this situation?
a. Doing a completely different experiment about cheeseburgers
b. Doing the experiment with extra salt on the french fries
c. Doing the experiment with 10 students (5 boys and 5 girls)
d. Doing the experiment without any salt on the french fries.

5. 4. A student is constructing a device to make electricity by moving a magnet through a coil of wire. She wants to measure the amount of electricity output from this device.
Which tool would enable her to measure the electrical current from this device?
a. A digital thermometer
b. Protractor
c. galvanometer
d. spring scale

6. 5. The NASA engineers that designed the rockets that took our astronauts to the moon had to consider the mass of all the material that went into the construction of the rockets. They also had to consider the distance from Earth to the Moon. Which SI (metric) units did they use for the rocket mass and which SI (metric) unit did they use for the distance?
a. kilograms for the mass and kilometers for the distance
b. pounds for the mass and kilometers for the distance
c. Kelvins for the mass and Newtons for the distance
d. grams for the mass and meters for the distance

7. 6. In the wall – sit experiment performed in class last week for the Science Fair Project, which of the following would be considered a bias or error?
The same boy and girl perform the test 3 times.
One of the participants puts their hands on their legs.
Who stays in the wall-sit position the longest.
They do the same exercise.

8. a. Give the supplement to both groups for only 30 days
7. A calcium supplement designed to make bones stronger was given to two groups of people during a scientific study as displayed in the table below
After 60 days, all the people had their bone density tested and the results appeared to show that their bones were marginally stronger. However they neglected a key task when they did their experiments. Identify the key task that they did not do.
a. Give the supplement to both groups for only 30 days
b. Test only one group with 100mg of the supplement
c. Create a third group that receives 75mg of the supplement
d. Create a third group (a control group) that does not receive the supplement
Dosage
Group 1
30 mg each day
Group 2
60 mg each day

9. Pencils down, get out a pen to grade your paper.

10. 1. A student wants to test how the concentration of phosphorus in a fertilizer affects plant growth.
In designing this experiment the manipulated variable would most likely be the...?
a. height each plant grows after given fertilizer.
b. type of phosphorus used.
c. type of each plant used.
d. amount of phosphorus used per plant.

11. 3000mg = _____________g 3g
30g
.3g
30000g

12. Two students want to test how the amount of salt on McDonald’s french fries affects the blood pressure of 8th grade boys and girls that eat them. They conduct three trials with 5 boys and 5 girls.
On the following day with the same 10 students, they repeat the experiment over, but this time they make sure that the french fries do not have any salt on them at all.
What is the control experiment in this situation?
a. Doing a completely different experiment about cheeseburgers
b. Doing the experiment with extra salt on the french fries
c. Doing the experiment with 10 students (5 boys and 5 girls)
d. Doing the experiment without any salt on the french fries.

13. 4. A student is constructing a device to make electricity by moving a magnet through a coil of wire. She wants to measure the amount of electricity output from this device.
Which tool would enable her to measure the electrical current from this device?
a. A digital thermometer
b. Protractor
c. galvanometer
d. spring scale

14. 5. The NASA engineers that designed the rockets that took our astronauts to the moon had to consider the mass of all the material that went into the construction of the rockets. They also had to consider the distance from Earth to the Moon. Which SI (metric) units did they use for the rocket mass and which SI (metric) unit did they use for the distance?
a. kilograms for the mass and kilometers for the distance
b. pounds for the mass and kilometers for the distance
c. Kelvins for the mass and Newtons for the distance
d. grams for the mass and meters for the distance

15. 6. In the wall – sit experiment performed in class last week for the Science Fair Project, which of the following would be considered a bias or error?
The same boy and girl perform the test 3 times.
One of the participants puts their hands on their legs.
Who stays in the wall-sit position the longest.
They do the same exercise.

16. a. Give the supplement to both groups for only 30 days
7. A calcium supplement designed to make bones stronger was given to two groups of people during a scientific study as displayed in the table below
After 60 days, all the people had their bone density tested and the results appeared to show that their bones were marginally stronger. However they neglected a key task when they did their experiments. Identify the key task that they did not do.
a. Give the supplement to both groups for only 30 days
b. Test only one group with 100mg of the supplement
c. Create a third group that receives 75mg of the supplement
d. Create a third group (a control group) that does not receive the supplement
Dosage
Group 1
30 mg each day
Group 2
60 mg each day

17. Can I? Use appropriate tools and procedures Identify variables
Use the Scientific Method
TOC # 9 Measurement foldable

18. Video!
Measuring Matter

19. Measurement Foldable Length Mass Area Density Volume Temperature
1. Fold construction paper in half like a hamburger bun
2. Unfold the construction paper
3. Fold the two sides in to the middle until they touch.
Divide the front 2 flaps into 3 equal parts for each flap
Label each of the 6 flaps as shown
Front of Foldable
Length
Mass
Area
Density
Volume
Temperature

20. Inside Foldable
Tool Definition
Formula Units

21. Length

22. Area Tool: Ruler Definition: How much surface an object covers.
Formula:
A= lxw
Units:
Square meters (m2)

23. Volume

24. Mass

25. Density

26. Temperature

27. Tape or glue this to a sheet of paper in your SNB
TOC # 9 Measurement foldable