Question

1. how often does a high tide and then low tide occur?

a. every 6 hours
b. every 3 hours
c. every 12 hours
d. every 8 hours

1. why is the moon critical in helping earth sustain life?

a. because the moon stabilizes the wobble in earth’s rotation
b. because the moon gives us our tides
c. because the moon helps stabilize the climate
d. all of the above

1. why are the craters on the moon different sizes?

a. the craters were formed at different times
b. the craters were formed by a variety of impactors
c. the craters were all formed at once
d. the craters were formed by space debris

1. when the moon is closest to earth it is called...

a. apogee
b. perigee
c. apoterra
d. periterra

1. when the moon is farthest away from the earth it is called...

a. apogee
b. perigee
c. apoterra
d. periterra

1. when flying to jupiter, we must take the following pathway...

a. fly directly to jupiter
b. fly to mars and get a gravity assist, then slingshot to jupiter
c. fly to venus first, and get gravity assists from venus and earth
d. fly to the moon first, then get a gravity assist from earth

Explanation:

Question 36

Tides are caused by the gravitational pull of the moon and sun. A high tide followed by a low tide occurs approximately every 6 hours (since there are two high and two low tides in about 24 hours, so 24/4 = 6).

The moon stabilizes Earth's axial wobble (which affects climate stability), causes tides (which have ecological and geological impacts), and overall helps sustain life - so all the given reasons are correct.

Moon craters are formed by impacts from various objects (impactors) like asteroids, meteoroids, etc. Different impactors have different sizes and energies, leading to craters of different sizes.

Answer:

a. Every 6 hours

Question 37