Cause of Day and Night

1. What causes day and night? (a) The Earth spins on its axis. (b) The Earth moves around the Sun. (c) Clouds block out the Sun's light (d) The Earth moves into and out of the Sun's shadow. (e) The Sun goes around the Earth. What answer is correct?

Relationship between Moon and Earth

6. Which is the most accurate model of the Moon in relative size and distance from the Earth? (The unshaded object in each diagram is the Earth)(Diagram attached) (a) Answer A (b) Answer B (c) Answer C (d) Answer D (e) Answer E What answer is correct?

Model of the sun, Mars and one of Mars' moons, Deimos

4. The diagram (see diagram attached) represents a model of the sun, Mars and one of Mars' moons, Deimos. Please look at the model and determine which object looks most like Deimos to the person in the model who is observing from the pole of Mars. (a) Answer A (b) Answer B (c) Answer C (d) Answer D (e) Answer E What answer is correct?

Experiment with colors

21. When green glass is placed between the flashlight and the white movie screen (see attached diagram), a green spot appears on the screen. If green glass and red glass are placed between the flashlight and the movie screen (as shown on the right below), what will happen to the spot? (a) It will be green. (b) It will be yellow. (c) It will be brown. (d) It will be red. (e) It will disappear. What is the correct answer?

Force of Gravity

27. The Moon is moving around the Earth as shown in Figure 1 (attached). If the force of gravity were to suddenly disappear, which of the following arrows would best represent the path of the moon? (a) Answer A (b) Answer B (c) Answer C (d) Answer D (e) Answer E. What is the correct answer?