1. Hildebrandt Intermediate
TAKS REVIEW
Hildebrandt Intermediate

2. Lab Safety Rules
If you have long hair, pull it away from your face or put in a ponytail.
Do not put your face or hands over any boiling liquid.
Never point a container at yourself or anyone else while it is being heated.
Always cut away from your body and others.
Dispose of all chemicals and used materials in their designated containers, do not assume that everything goes in the garbage or down the drain.
If you come in contact with a chemical or you are injured, notify the teacher immediately.
When in doubt, notify your teacher.
Always add acids and bases to water NOT the other way around.

3. Image: http://morrisonlabs.com/lab_safety.htm
What’s wrong? Identify 6 different safety concerns shown in the picture below.
Image:

4. The answers are … Don’t fool around during a lab.
Always wear safety goggles when doing an experiment
Always point test tubes and other items away from yourself and others when heating.
Don’t eat or drink while in the lab.
Keep hair and other flammable objects away from flames.
Don’t leave a flame unattended.
Image:

5. Image: http://morrisonlabs.com/lab_safety.htm
What’s wrong? Identify 9 different safety concerns shown in the picture below.
Image:

6. The answers are … Always wear safety goggles during a lab.
Don’t smell directly from a container - WAFT.
Don’t heat closed containers.
Keep your lab area neat and clean.
Don’t place lab materials near the edge of the table.
Keep papers and other flammable objects away from flames.
Unplug equipment when not in use.
Don’t leave materials laying on the floor.
Clean up spills immediately
Image:

7. Scientific Method Question – “Will ________ affect __________”?
Hypothesis – “If I do this, then this will happen.”
Variables
Independent – What did I change?
Dependent – What am I recording? Data
Controlled – What did I keep the same? No Change
Materials – Items you used to conduct experiment.
Procedure – What did you do? The steps of the experiment. Like a recipe.
Data – Collection of information in forms of charts and graphs.
Conclusion – Summation of whether or not your hypothesis was proven (correct) or disproven (incorrect).

8. Read the information below and then answer the questions.
SpongeBob and Patrick love to go jellyfishing. They wondered if a new brand of jellyfish bait would help them catch more jellyfish. To test their idea, they bought a big container of bait for their next 3 trips to their top-secret fishing spot. SpongeBob fished without any bait, while Patrick used the new bait. Both of them kept track of how many jellyfish they caught in 30 minutes, which is shown in the chart.
SpongeBob
Patrick 25 24 18 28 26 19
Which person was the control?
2. What is the independent variable?
3. What is the dependent variable?
4. Based on the data, how would you rate the new bait?

9. Read the information below and then answer the questions.
SpongeBob and Patrick love to go jellyfishing. They wondered if a new brand of jellyfish bait would help them catch more jellyfish. To test their idea, they bought a big container of bait for their next 3 trips to their top-secret fishing spot. SpongeBob fished without any bait, while Patrick used the new bait. Both of them kept track of how many jellyfish they caught in 30 minutes, which is shown in the chart.
SpongeBob
Patrick 25 24 18 28 26 19
SpongeBob
Which person was the control?
2. What is the independent variable?
Jellyfish Bait
3. What is the dependent variable?
Number of jellyfish caught
4. Based on the data, how would you rate the new bait?
The bait appears to have helped a small amount, but shouldn’t be rated as a great deal. Overall Patrick caught 2 more jellyfish than SpongeBob.

10. Read the information below and then answer the questions.
SpongeBob loves to grow flowers for his pal Sandy, who loves big, colorful flowers. He found a new brand of seeds coated with a special “booster” fertilizer that said it would produce huge flowers. He planted 5 of the new seeds in one container and 5 of the old brand of seeds in another container. He placed both containers on a sunny windowsill and watered them every day. He measured the diameter of each flower, which is shown in the chart.
Old Seeds
10 cm
12 cm
14 cm
6 cm
8 cm
New Seeds
16 cm
Which group was the control?
2. What is the independent variable?
3. What is the dependent variable?
4. What is the average diameter for each group?
5. Which seeds are the best for big flowers?

11. Read the information below and then answer the questions.
SpongeBob loves to grow flowers for his pal Sandy, who loves big, colorful flowers. He found a new brand of seeds coated with a special “booster” fertilizer that said it would produce huge flowers. He planted 5 of the new seeds in one container and 5 of the old brand of seeds in another container. He placed both containers on a sunny windowsill and watered them every day. He measured the diameter of each flower, which is shown in the chart.
Old Seeds
10 cm
12 cm
14 cm
6 cm
8 cm
New Seeds
16 cm
Which group was the control?
The seeds without the booster fertilizer
2. What is the independent variable?
Booster fertilizer on the new seeds
3. What is the dependent variable?
Size or diameter of the flower
4. What is the average diameter for each group?
Old = 10 cm, New = 12 cm
5. Which seeds are the best for big flowers?
New seeds w/ the booster

12. Inferences
An inference is an explanation based on prior knowledge and experience.
When you drop a ball, what does it do?
It bounces of course.

13. Types of Graphs Pie Charts Line Graph Show parts over whole Bar Graph
Show percentages
Line Graph
Show change over time
Bar Graph
Show comparison of multiple items

14. Which Graph?
Which graph is a good choice when you are talking about pieces that make a whole?
Pie chart
Which graph is a good choice when you need to compare different items?
Bar graph
Which graph is a good choice when different measurements of the same item are recorded over time?
Line graph

15. Graph Measurements Percent – shows parts to a whole
What percent is one half?
What percent is six eighths?
Average – 1. add up all the numbers
2. divide the sum by the number of addends
What is the average of 2.3, 2.78, and 3.44?
First add (line up all the decimals) = 8.22
Next divide 8.22 by 3 (you added three numbers together) = 2. 74

16. Graph Measurements
Range – difference between the largest and smallest numbers
Difference tells you to subtract
What is the range of 4 through 10?
10 – 4 = 6
What is the range of 9.78 through 4.56?
9.78 – 4.56 = 5.22

17. Graph Measurements Frequency – is how often something occurs
In 10 seconds, how many times can you say this phrase?
Susie sells sea shells by the sea shore.

20. Graphs What kind of graph would you use to show this information?
line graph
What variable goes on the X axis?
water depth (in meters)
What variable goes on the Y axis?
temperature in degrees Celsius
DRY (dependent – y axis)
MIX (independent – x axis)

21. Graphs
Based on this information, what happens to the water temperature as the ocean depth increases?

22. Models Have you ever built a model car? Is it actual size?
A model is a good representation of the actual object, but on a smaller scale.
Models have their limitations.
Can we make a life size replica of our solar system?
We can make a model of our solar system, but a life size replica would not be possible.
What are some limitations of using an apple to represent the Earth?

23. Equipment
Which instrument could be used to determine the volume of an irregularly shaped solid?
Graduated cylinder

24. Equipment
Mrs. Koch needs to measure the density of a regular shaped object. What equipment is needed to complete this lab?
Triple beam balance (grams = mass)
Ruler (cubic centimeters = cm3) or
Graduated cylinder (milliliters = mL)

25. Equipment
Mrs. Clark is a fast runner. Mrs. Meyer decides that the class should calculate her actual speed. What pieces of equipment would be needed to complete this experiment?
Stop watch (calculate time)
Meter sticks (measure distance)

26. Equipment
Mrs. Crannie’s classes need to study the water in the local pond. What pieces of equipment would be needed to study what organisms actually live in the water?
Beaker – to collect pond water samples
Dropper – to get a small sample
Microscope slide – to place sample on
Microscope – to examine the sample

27. Equipment
Students were instructed to heat a small sample of liquid in a container. What pieces of equipment would be needed to conduct this experiment?
Test tubes
Test tube holder
Bunsen burner
Safety goggles

28. Safety Equipment
What piece of equipment is shown?

29. Safety Equipment
What piece of safety equipment is shown?

30. Safety Equipment
What piece of safety equipment is shown?

31. Safety Equipment
What piece of safety equipment is shown?

32. Unit of Measurement What unit do we use to measure mass? Grams
What unit do we use to measure liquid volume?
Liters
What unit do we use to measure length?
meters

33. a hill ! What is the major landform shown on the topographic
Map below?
a hill !

34. What is the contour interval on this map?

35. The closed terrarium models a plant ecosystem. The plant
Cannot survive over a long period of time in this terrarium
Because it limits the growth of the plant. What factor will
most limit the plants growth?
A decrease in carbon dioxide
Decrease in oxygen
Evaporation of water
Lack of sunlight

36. The student is digging to collect soil samples.
What is the least important safety practice
for this activity?
Wearing goggles
Wearing close-toed shoes
Knowing where the shovel is
Removing jewelry

37. The two images are view of the same salt crystals under
a microscope. Which action would most likely cause the
difference in size of the individual salt grains between
the two views?
Switching the objective lens
Adjusting the
diaphragm
C. Turning the
fine adjustment
knob
D. Changing the
angle of the light
source

38. Heating a mixture of two liquids
Match the pieces of equipment needed to do each job listed:
Heating a mixture of two liquids
Examining a sample of pond water under a microscope