Unit Test — Unit test Answers

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Which event occurs during high tide?

All of Earth’s ocean levels rise.

The moon’s orbit is closer to Earth.

The gravity of the Sun and moon cause the Earth’s crust and water to bulge.

Earth’s crust and water are being pulled in opposite directions by the Sun and moon.

Which statement accurately describes a light-year?

It is the shape of a galaxy.

It is the distance that light travels in a year.

It is a yearly measurement of light given off by stars.

It is the amount of time it takes light to travel one million kilometers.

What occurs when the moon blocks the view of the Sun?

neap tide

spring tide

solar eclipse

lunar eclipse

At which location would an object’s weight be the greatest?

on Pluto

on Earth

on the Sun

on the moon

What can be observed only by observing its effects on gravity?

dark matter

a solar nebula

gas and dust

a planetesimal

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