Earth the Unique Planet

What surrounds the Earth and contains gases that are essential for life?

• A satellite

• The sun

• The atmosphere

• A ring

Earth is the only planet we know that can support _________.

• an atmosphere

• life

• a moon

• a rocky core

Earth is about ________covered with water.

• 30 percent

• 50 percent

• 15 percent

• 70 percent

Which planet in the solar system is closest to the Sun?

• Mars

• Mercury

• Earth

• Venus

Why is it impossible for life to survive on planet Mercury?

• Its proximity to the sun

• Because it’s far from the sun

• It’s very cold from the inside

• None of these

1. We call the Earth a blue planet because:

• it is blue in colour

• two -thirds is covered by water

• sky is blue in colour

• none of these