Highlight the correct answer.
1. The moon’s gravitational pull on earth creates
a. Tides
b. Tsunamis
c. Hurricanes d. Cyclones
2. The sun’s gravitational pull influences
a. Stars z
b. Black holes
c. Planets in our solar system
d. All of the above
3. Escape velocity is a measure of
a. Mass
b. Weight
c. Speed
d. Distance
4. The gravitational pull a body in space has depends on its
a. Weight
b. Mass
c. Radius
d. Diameter
5. A black hole
a. Contains matter
b. Is invisible
c. Has a strong gravitational pull
d. All of the above
6. Stars which are 1.5 to 3 times larger than the sun
a. Are called black holes
b. Influence the tides on earth
c. Have a small mass
d. None of the above
7. Give several examples of how gravity affects living things on earth.
8. John Archibald Wheeler was an important American physicist. Do some research and explain his role in the research on black holes. John Archibald Wheeler was an American theoretical physicist. He was largely responsible for reviving interest in general relativity in the United States after World War II. Wheeler also worked with Niels Bohr in explaining the basic principles behind nuclear fission
