Earth and Life Science

Why is Earth called “the living planet?”

• A. It sustains life.
• B. It has atmosphere.
• C. It has water at the surface.
• D. All of the above

Which among the set of planets are called terrestrial?

• A. Jupiter, Neptune, Uranus
• B. Mercury, Venus, Mars, Earth
• C. Earth, Venus, Mars, Jupiter
• D. Jupiter, Saturn, Uranus, Neptune

What makes the planet Earth habitable compared to other planets?

• A. It has soil.
• B. It has trees.
• C. It has people.
• D. It has liquid water.

What makes planet Earth habitable?

• A. It has comfortable distance from the sun.
• B. It has atmosphere that protects from radiation.
• C. The atmosphere holds carbon dioxide and other gases.
• D. All of the above

Why is Earth called a terrestrial planet?

• A. It has life.
• B. It is closest to the sun.
• C. It is farther from the sun.
• D. It is placed at almost the middle planets.

Which of the following best describes the surface of the planet Earth?

• A. a thick layer of hydrogen gas
• B. cloudy and hot with lots of volcano
• C. cold, rocky, and covered with red dust
• D. mostly water surface with some areas of land

Earth is said to be a unique planet. Which answer verifies the statement?

• A. It supports life.
• B. It is mostly covered in water.
• C. Its atmosphere is mostly nitrogen and oxygen.
• D. All of the above

Which is supported and sustained by planet?

• A. life
• B. a moon
• C. a rocky core
• D. an atmosphere

How many percent of water comprises the Earth?

• A. 15%
• B. 30%
• C. 50%
• D. 70%

Which factors are needed for organisms to live on Earth?

• A. temperature and nutrient
• B. atmosphere and energy
• C. only A
• D. both A and B