Quiz on Earth's Atmosphere and Space

What happens to the sky when you are beyond the Earth's atmosphere?

• It turns blue and cloudy.

• It becomes black and you can see stars.

• It becomes red and you can see the sun.

• It turns green and you can see rainbows.

What keeps the atmosphere in place around the Earth?

• The Earth's magnetic field.

• The Earth's gravity.

• The Earth's rotation.

• The Earth's temperature.

What happens to gravity as you move away from the Earth?

• It gets stronger.

• It stays the same.

• It gets weaker.

• It disappears completely.

What is necessary to keep a spacecraft moving towards the Moon?

• Turning off the motors.

• Increasing the spacecraft's mass.

• Keeping the motors burning.

• Reducing the spacecraft's speed.

The Earth's gravitational attraction is caused by its...

• atmosphere

• Moon

• surface

• mass

The Moon has no atmosphere because...

• its mass is small

• its gravity is weak

• both of these

• none of these

What force pulls the rocket back to Earth?

• upward push of the rocket

• gravitational pull

• atmospheric pressure

• centrifugal force

Are the forces on a rocket balanced or unbalanced, as it lifts off the ground?

• balanced

• unbalanced

• neither

• both

What happens to the spacecraft when it is above the Earth's atmosphere in a vacuum?

• It experiences air resistance

• It experiences drag force

• There is no air resistance or drag force

• It slows down

What occurs when the forces on a spacecraft are balanced?

• The spacecraft accelerates

• The spacecraft decelerates

• The spacecraft moves at a constant speed

• The spacecraft stops