G8 U6 VOCAB TEST

Today, most people live on ______.

• Earth
• a space station
• Mars
• Venus

You will be very cold in space because the_____ is very low.

• gravity
• population
• view
• temperature

______ pulls us down to the ground.

• Temperature
• Gravity
• Population
• Planet

______ is often called "the Red Planet." It's the 4 planet from the sun.

• Venus
• The moon
• Mars
• The Earth

You can recognize ______ by its yellow clouds. It's the 2nd planet from the sun.

• Venus
• Mars
• Earth
• the Sun

Many scientists want to work on a space station because it has a great ______ of the stars.

• view
• temperature
• space station
• gravity

People live on a ______ in space.

• helicopter
• jet
• space station
• mansion

Humans can't live on some planets because they don't have enough ______ to breathe.

• oxygen
• temperature
• gravity
• view

Our planet, Earth, is becoming more and more ______.

• faster
• crowded
• quiet
• tiny

The world's ______ will reach 11 billion by 2100.

• oxygen
• temperature
• gravity
• population