Question 1

Why is Earth called “the living planet?”

Accepted Answer

All of these

Answer

It sustains life.

Answer

It has water at the surface.

Answer

It has atmosphere.

Question 2

Which among the set of planets are called terrestrial?

Accepted Answer

Mercury, Venus, Mars, Earth

Answer

Earth, Venus, Mars, Jupiter

Answer

Jupiter, Neptune, Uranus

Answer

Jupiter, Saturn, Uranus, Neptune

Question 3

What makes the planet Earth habitable compared to other planets?

Accepted Answer

It has liquid water.

Answer

It has trees.

Answer

It has soil.

Answer

It has people.

Question 4

What makes planet Earth habitable?

Accepted Answer

All of these

Answer

It has comfortable distance from the sun.

Answer

It has atmosphere that protects from radiation.

Answer

The atmosphere holds carbon dioxide and other gases.

Question 5

Why is Earth called a terrestrial planet?

Accepted Answer

It is closest to the sun.

Answer

It has life.

Answer

It is placed at almost the middle planets.

Answer

It is farther from the sun.

Question 6

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

Accepted Answer

mostly water surface with some areas of land

Answer

cloudy and hot with lots of volcano

Answer

a thick layer of hydrogen gas

Answer

cold, rocky, and covered with red dust

Question 7

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

Accepted Answer

All of these

Answer

Its atmosphere is mostly nitrogen and oxygen.

Answer

It is mostly covered in water.

Answer

It supports life.

Question 8

Which is supported and sustained by planet?

Accepted Answer

life

Answer

a  moon

Answer

an atmosphere

Answer

a rocky core

Question 9

How many percent of water comprises the Earth?

Accepted Answer

70%

Answer

30%

Answer

15%

Answer

50%

Question 10

Which factors are needed for organisms to live on Earth?

Accepted Answer

temperature, nutrient, atmosphere and energy

Answer

atmosphere and energy

Answer

temperature and nutrient

Answer

temperature and nutrient ONLY

Question 11

What characteristics does the Earth have to maintain an organism’s body to survive?

Accepted Answer

All of these

Answer

Earth has sub-surface water or molten rock that can circulate and replenish nutrients for organisms.

Answer

Earth has volcanic activities to circulate nutrients.

Answer

Earth has a water cycle and atmosphere.

Question 12

What makes Earth similar to Venus?

Accepted Answer

D. Both A and C

Answer

A. Earth and Venus are the right sizes to hold a sufficient atmosphere.

Answer

B. Venus’ atmosphere is 100 times thicker than Earth.

Answer

C. Among all the solid planets and moons, only Earth, Venus, and Titan have significant atmospheres.

Question 13

Which statement about the Earth’s energy in sustaining life is incorrect?

Accepted Answer

Earth survives in too little energy.

Answer

Earth has magnetic field to protect from solar radiation.

Answer

Earth is kept warm by an insulating atmosphere.

Answer

Earth is in the right distance from the sun.

Question 14

Which distinct characteristic made Earth different from any other planet?

Accepted Answer

It is the only planet that has a large amount of liquid water.

Answer

It is the only planet that changes its structure.

Answer

It is the only planet that turns around in space.

Answer

It is the only rocky planet.

Question 15

What does Earth offer to human in order to sustain life?

Accepted Answer

D. Both A and B.

Answer

C. Only A

Answer

B. Earth has sufficient nutrients from ocean to land.

Answer

A. Earth has abundant plant life.

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