1.
SUMMATIVE TEST NO. 1
in
SCIENCE 7

2.
I. Choose the letter of the correct answer. Write your answer on a piece of paper.
1. What are the types of variables in a scientific experiment?
a. controlled, dependent, independent
b. independent, dependent, manipulated
c. dependent, codependent, manipulated
d. manipulated, controlled, independent
2. What is the variable present in an experimental set up and not in a controlled set up?
a. dependent b. independent c. controlled d. manipulated
3. This variable is present to both experimental and controlled set up
a. dependent b. independent c. controlled d. manipulated
4. A type of observation that uses your 5 senses?
a. Qualitative
b. Quantitative
c. Inference
d. Prediction

3.
5. The variable that you measure is the ______________.
a. independent b. dependent c. controlled d. manipulated
6. Dr. Eversole sets up experiment on plants to see how different liquids affect plant growth. Each plant in the
experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight,
and listens the same music. In this investigation, what is the independent variable?
a. type of plant b. water, apple juice, milk c. plant growth d. sunlight, amount of soil, music
7. Mr. G normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he
sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his
dependent variable?
a. Type of reward
b. Type of dog
c. Praise
d. Amount of time the dog follows commands

4.
8. Which of the following is an example of an inference?
a. What will happen if we put 25 pennies on our bridge?
b. Our bridge held 25 pennies when we tested it.
c. think that our bridge will hold 25 pennies because we strengthened it by folding it.
d. Our bridge did not hold 25 pennies when we tested it.
9. Which of the following is an observation about grasshoppers that a science class could have made on
their nature walk?
a. The grasshoppers are green with long back legs and antennae.
b. The grasshoppers will probably eat more grass than tree leaves.
c. The grasshoppers will live longest in a container filled with plants.
d. The grasshoppers all hatched from eggs laid the year before.
10. This part of the experiment serves as a basis of comparison; the one variable being tested has been
omitted.
a. experimental set up
b. controlled set up
c. data
d. variable

5.
For number 11. Refer to the figure below.
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of
plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is
the best conclusion for this experiment?
a. Acid has no effect on the health of this type of plant.
b. Low acidity is harmful to this type of plant.
c. High acidity is helpful to this type of plant.
d. High acidity is harmful to this type of plant.

6.
12. Choose the correctly written hypothesis for "What is the effect of putting Pam Cooking Spray on the bottom of a sled?
a. I think the sled will slide faster.
b. If I put Pam Cooking Spray on the bottom of my sled, then I will slide faster.
c. If I put Pam Cooking Spray on the bottom of my sled, then I will win the race.“
d. None of the above.
13. What is the first step in the scientific method?
a. Make an observation
b. Make a hypothesis
c. Design and conduct an experiment
d. Share your results
14. Mrs. Register sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the constant.
a. distance traveled by the ball
b. mass of the ball
c. height of the ramp
d. weight of the ball

7.
For item no. 15 refer to the figure below.
What can you infer about the temperature for E.coli bacterial growth?
a. E. coli does not grow well at low and high temperatures.
b. E.coli grows best at very low temperatures
c. E coli will continue to grow at very high temperatures.
d. E.coli grows best at very high temperatures.

8.
II. A. Qualitative and Quantitative Observation. Write your first name if
the following observation is a qualitative and your last name if it is
quantitative.
_________________16. There were 5 children on the playground.
_________________17. The sky was blue and filled with clouds today.
_________________18. The leaves on the plant are turning brown.
_________________19. The plant has grown 4 cm since yesterday.
_________________20. Dolphins have smooth skin.

9.
B. Observation vs. Inference. Refer to the figure below. Write “O” if the following statement is an
observation and “I” if inference.
_____21. The man is wearing a striped tie.
______22. The car seems to be a VW Buggy
______23. The man's tongue is sticking out.
______24. The dog is smarter than the human.
______25. The dog has long ears.