Read each statement below. If the statement is true, write the word true in the space provided. If the statement is
false, write the word false in the space provided.
1. Circadian rhythms in plants and animals are based on Earth's rotation of about 24 hours.
Tive
2. The lithosphere is made up of the solid part of the upper mantle and the crust.
3. Studies of seismic waves suggest that the lithosphere is probably more rigid than the
asthenosphere.
4. P-waves travel faster through liquids than through solids.
5. According to Newton's law of gravitation, the force of attraction between any two objects
depends on the weight and temperatures of the objects.
6. Rays of the Sun that strike the Earth at near 90° produce the greatest amount of heat.
7. When the Southern Hemisphere experiences summer, the Northern Hemisphere
experiences winter.
8. In a standard time zone, the Sun is highest over the center of the zone at Noon.
9. A satellite in polar orbit passes over a different portion of the Earth's surface with each orbit.
10. The orbits of communication satellites are geosynchronous orbits.