These are sets of questions across disciplines in Science. This may help students review for contests and other activities.

1. Questionsforquizbowl
Suggestedquestionsforaverage round
Science:
1. When scientists investigate, it is said that they follow the scientific method. How will you
logically arrange the essential steps in the scientific method?
1. make a hypothesis
2. recognize the problem
3. formulate the simplest generalization
4. perform experiments to test the prediction
5. predict the consequences of the hypothesis
a. 1, 4, 2, 3, 5 c. 2, 5, 1, 3, 4
b. 2, 1, 5, 4, 3 d. 3, 2, 1, 4, 5
2. In an experiment to determine whether or not the temperature of the water affects the rate at
which salt dissolves, the independent variable is
a. the amount of salt
b. the temperature of the water
c. the amount of water
d. the rate at which salt dissolves
3. A mineral supplement designed to prevent the flu was given to two groups of people during a
scientific study. Dosages of the supplement were measured in milligrams per day, as shown in
the table. After 10 weeks, neither group reported a case of the flu. Which procedure would have
made the outcome of this study more valid?
a. test only one group with 200 mg of the supplement
b. test the supplement on both groups for 5 weeks instead of
10 weeks
c. test a third group that receives 150 mg of the supplement
d. test a third group that does not receive the supplement
4. Acid rain can have a pH between 1.5 and 5.0. The effect of acid rain on the environment
depends on the pH of the rain and the characteristics of the environment. It appears that acid
rain has a negative effect on plants. To test the effect of pH on the early growth of bean plants
in the laboratory, which of the following variables should be kept constant?
i. bean plants ii. pH of water
iii. the environment iv. amount of water
a. i, ii, iii b. ii, iii, iv c. i, iii, iv d. ii and iv
5. The force that accelerates a rocket into outer space is exerted on the rocket by the exhaust
gases. Which Newton’s law of motion is illustrated in this situation?
a. First law of motion
b. Second law of motion
c. Third law of motion
d. cannot be determined
6. When a cold spoon is put into a cup of hot coffee, the spoon heats up while the coffee cools
down. Which of the following is implied by this observation?
a. heat flows from a body with more thermal energy to a body with less thermal
energy
b. heat flows from a body with less thermal energy to a body with more thermal
energy

2. c. heat flows from a body with low temperature to a body with high temperature
d. heat flows from a body with high temperature to a body with low temperature
7. A metal pan heats up faster than an equal amount of water. Which of the following
statements best explains this?
e. metals are better conductors of heat than water
f. metals are denser than water
g. metals have lower specific heats than water
h. metals have higher boiling points than water
8. Which of the following is true about volume and density when a metal is heated?
VOLUME DENSITY
a. increases increases
b. decreases decreases
c. increases decreases
d. decreases increases
9. Which of the following is true about two identical pots, one filled with boiling water and the
other an equal amount of lukewarm water, both left at room temperature?
COOLS FIRST COOLS FASTER
i. boiling boiling
j. lukewarm lukewarm
k. boiling lukewarm
l. lukewarm boiling
10. The following describe chemical change except
m. A chemical change takes place when a solid is changed to liquid then changed to
gas
n. For a chemical change to take place, heat, light, or electricity is either needed or
given off.
o. Some examples of chemical change are souring of milk, ripening of fruit, and
digestion of food.
p. In a chemical change, a new substance is formed, with chemical properties that
are different from, the original substance.