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Test your science IQ
Sample questions from the national assessment test
Thanks for taking our quiz. You answered 100% of the questions correctly.
4TH GRADE QUESTIONS
1. Which of the following is NOT a form of precipitation?
Correct:
b. Wind.
67 percent of students answered correctly.
2. Beans and coal both have stored energy. Where did the energy come from that is stored in beans and coal?
Correct:
b. From the Sun's light.
33 percent of students answered correctly.
3. When you are riding a bicycle at night, your bicycle's reflectors help people in cars see your bicycle. How do bicycle reflectors work?
Correct:
c. They bounce light back from other sources.
59 percent of students answered correctly.
8TH GRADE QUESTIONS
4. The Earth's Moon is
Correct:
b. Always much closer to the Earth than it is to the Sun.
49 percent of students answered correctly.
5. Which of the following best explains why the pressure inside a high-flying airplane must be controlled?
Correct:
b. At high altitudes there is lower atmospheric pressure than on the surface of the Earth.
30 percent of students answered correctly.
6. To keep a heavy box sliding across a carpeted floor at constant speed, a person must continually exert a force on the box. This force is used primarily to overcome which of the following forces?
Correct:
c. The frictional force exerted by the floor of the box.
52 percent of students answered correctly.
12TH GRADE QUESTIONS
7. As observed with special instruments from Earth, the Sun appears in the sky to be slightly larger in January than in July. Which of the following accounts for this observation?
Correct:
a. The Earth moves in an orbit that is not circular but is closer to the Sun in January than in July.
41 percent of students answered correctly.
8. The equation ?X -> Y+ Z + energy? represents a nuclear decay, in which nucleus X decays into particle Y and nucleus Z and releases energy. Which of the following can explain why energy is released in the decay?
Correct:
c. The mass of X is greater than the sum of the masses of Y and Z.
58 percent of students answered correctly.
9. A 10-liter sample of CO2 gas contains the same number of molecules as how many liters of O2 gas at the same temperature and pressure?
Correct:
b. 10 liters.
36 percent of students answered correctly.