Chapter 4 C Astronomy Lesson 1 Review Assessment

The objects moving in the sky that ancient people thought were "wandering through the stars" were

• comets and meteors shooting across the sky.

• moons revolving around some planets

• planets orbiting the sun

Ptolemy's model showed that

• the sun and planets revolved around Earth

• Earth did not have any moons

• Earth was in a different solar system than the sun

From Earth, some planets seem to shine brighter than stars because they

• receive more light from the sun than do the stars

• stay in their orbits due to gravity

• are closer to Earth than any star except the sun.

Planets shine because they

• are revolving so fast

• reflect light from the sun

• have moonlike surfaces

In what ways are asteroids and comets like the planets?

• They orbit the sun

• They have their own moons

• They are formed from dust, ice, and gases

Meteoroids are formed from

• pollutants in the atmosphere

• small moons or planets

• asteroids or comets breaking apart

A meteoroid passing through Earth's atmosphere becomes a

• blazing comet or ice, dust, and gases

• burning rock

• asteroid when it begins to burn

Why is Earth affected more by the sun than by any other object?

• Earth is the closest planet to the sun

• Earth's gravity is caused by the sun

• The sun provides the heat and light necessary for life

What effect does the moon's gravity have on Earth?

• It makes Earth's orbit elliptical

• It causes the ocean's tides

• It reduces the effects of the sun's pull on Earth