Earth Science Quiz # 4

Which movement results in the moon's apparent motion across the sky during one day or night?

• the moon's revolution

• the moon's rotation

• Earth's rotation

• Earth's revolution

About how long does it take for Earth to complete one rotation?

• 1 hour

• 24 hours

• 24 days

• 365 days

What determines the apparent brightness of a star?

• the actual size of the star

• the star's size and its distance from Earth

• the actual brightness of the star

• the relative distance of the star from the sun

Which statement about the sun and other stars is TRUE?

• The sun is much larger than other stars so it blocks our view of the other stars during daylight hours.

• The sun is about as bright as other stars so the light from other stars is visible during most daylight hours.

• The sun is much closer to Earth than the other stars, but the other stars are visible most daylight hours.

• The sun is much closer to Earth than other stars so its brightness blocks the light from the other stars during daylight hours.

What is a star?

• a type of planet

• a dwarf planet

• a moon

• a burning ball of gas

Earth's gravity causes things to be pulled toward...

• the atmosphere

• the North Pole

• the moon

• the center of Earth

As you get closer to Earth's surface, what happens to Earth's gravity?

• Earth's gravity has a weaker pull on you.

• Earth's gravity has a stronger pull on you.

• There is no change in gravity.

• You experience zero gravity.

A pencil and a crumpled sheet of paper are dropped from one meter above the ground at the same time. What can you conclude will happen?

• The pencil will hit the floor before the paper.

• The paper will hit the floor before the pencil.

• The paper and pencil will hit the floor at the same time.

• There is not enough information to draw a valid conclusion.

What is one factor that affects the strength of gravity's pull on an object?

• how fast an object is rotating

• the apparent motion of an object across the sky

• the speed of revolution of one object around another

• the distance between two objects pulling on each other

Which of these is a force that causes objects to pull toward each other?

• gravity

• rotation

• apparent motion

• revolution