Earth, Moon, Sun - Chapter 12

One complete revolution of Earth around the sun takes about

• one rotation.

• one season.

• one year.

• one eclipse.

Earth has seasons because

• it rotates on its axis.

• the distance between Earth and the sun changes.

• its axis is tilted as it moves around the sun.

• the temperature of the sun changes.

In the Southern Hemisphere, the summer solstice occurs when the sun is

• at the equator.

• farthest south.

• farthest north.

• closest to Earth.

All objects are attracted to each other by the force of

• weight.

• mass.

• inertia.

• gravity.

The strength of the force of gravity depends on

• the masses of the objects and their speeds.

• the masses of the objects and the distance between them.

• the weight of the objects and their speeds.

• the masses of the objects and their weights.

A pattern or grouping of stars imagined by people to represent a figure is a

• star chart.

• mythological object.

• seasonal pattern.

• constellation.

The tendency of a moving object to continue moving in a straight line or a stationary object to remain in place is called

• orbital speed.

• mass.

• inertia.

• gravity.

The phase of the moon you see depends on

• where you are on Earth’s surface.

• how much of the sunlit side of the moon faces Earth.

• how much of the moon’s surface is lit by the sun.

• whether or not an eclipse is occurring.

When a meteoroid enters Earth’s atmosphere, it produces a streak of light called a(n)

• meteor.

• asteroid.

• meteorite.

• comet.

The constellations seem to move as the seasons on Earth change. What causes this?

• Like the moon, the stars move around Earth.

• As Earth revolves around the sun, we have a different view of the stars.

• As the Earth rotates on its axis, we see different parts of the sky.

• Just as the seasons on Earth change, so do the seasons on stars.