Direction: Choose the correct answer. Write your answer on your answer sheet. 1. A statement that answers the scientific problem based on the results of the experiment.
a. experiment b. hypothesis c. conclusion d. variable
2. An educated guess that may lead to a possible solution to the problem.
a. experiment b. hypothesis c. conclusion d. variable
3. What skill is used when you listen to the sounds produced by different types of vehicles?
a. analyzing data b. drawing conclusions
c. making a hypothesis d. making observations
4. .The variable being changed in the experiment
a. independent variable b. independent variable
c. control variable d. dispensable variable
5. What is the first step in scientific method?
a. analyzing data b. drawing conclusions
c. making a hypothesis d. making observations
6. What are the three types of variables used in scientific experiment?
a. independent, dependent, observed b. controlled, dependent, independent
c. identical, observed, quantitative d. independent, measurable, dependent
7. Which shows a scientific way of thinking?
a. State that all brands of gasoline will work well in any car.
b. Say that there is no truth in the existence of dinosaurs since no one has seen them.
c. Suggest that cats are better pets than dogs because they cuddle up to their owners.
d. Check if flatiron consumes more than a radio by looking at the electric meter when each is
being used.
For items 8-10: A group of students was asked to investigate how fast sugar dissolves in cold and in hot
water?
8. If this is going to be a fair test, what variables should they control?
a. Amount of water and sugar in each cup, method of stirring, time when the solid is added to
water, how long each solution is stirred.
b. Amount of water and sugar in each cup, method of stirring, how long each solution is stirred.
c. Amount of sugar in each cup; method of stirring, time when the solid is added to water, how
long each solution is stirred.
d. Amount of water in each cup, method of stirring, time when the solid is added to water; how
long each solution is stirred.
9. What is the dependent variable (what is being measured)?
I. the temperature of water III. the length of time that sugar completely dissolves in hot water
II. the amount of sugar IV. the length of time that sugar completely dissolves in cold water
a. I only b. II only c. II and III d. III and IV
10. What is the independent variable in the investigation?
a. I only b. II and III c. I, II and III d. II, III and IV