Question 1

Why is the ozone layer important to Earth?

Accepted Answer

It filters harmful UV radiation that reaches the Earth.

Answer

It produces enough amount of rain.

Answer

It protects Earth from meteors and asteroid impact.

Answer

It regulates the weather on Earth.

Question 2

Plants, animals, and microbes survive and thrive on Earth million years ago because Earth provides essential factors needed for life to exist. Which of the following factors is essential to support life on the planet?

30

Nutrients

Liquid water

All of the above

Temperature

Accepted Answer

All of the above

Answer

Nutrients

Answer

Liquid water

Answer

Temperature

Question 3

How does temperature affect the ability of Earth to support life?

Accepted Answer

temperature affects biological and chemical processes

Answer

temperature produces nutrients

Answer

temperature protects Earth from radiation

Answer

temperature intensifies gravity

Question 4

Which of the following is not a function of Earth’s atmosphere

Accepted Answer

It provides energy.

Answer

It provides significant insulation.

Answer

It protects from harmful radiation.

Answer

It gives protection against small to medium size meteorites.

Question 5

Which of the following factors affects a planet’s ability to hold atmosphere?

Accepted Answer

distance from the sun

Answer

presence of volcano c.

Answer

orbital size

Answer

presence of liquid water

Question 6

Ozone layer depletes when combined with CFC. What do you think will the ozone layer completely depleted?

Accepted Answer

penetration of ultraviolet radiation

Answer

solar wind will pass through

Answer

changes in weather

Answer

meteors will freely get through the Earth’s atmosphere

Question 7

What will happen to Earth if there are no greenhouse gases?

Accepted Answer

Earth’s temperature will decrease.

Answer

Earth’s temperature will increase.

Answer

Earth’s temperature will not be affected.

Answer

Earth’s temperature will become stable.

Question 8

An astronomer observed an Earth-sized like planet in a distant galaxy. Based on the data, the planet is at the same distance from its star, like Earth to its star - the sun. It is also covered with a thick atmosphere which is composed of carbon dioxide and shows no volcanic activity. What can you infer from these data?

Accepted Answer

The Earth-like planet is hot and no nutrient cycling occurs.

Answer

The Earth-like planet is cold and no nutrient cycling occurs.

Answer

The Earth-like planet is hot and nutrient cycling occurs.

Answer

The Earth-like planet is cold and nutrient cycling occurs. c.

Question 9

What will most likely happen if Earth is the first planet from the sun? I. No atmosphere

II. No liquid water

III. No energy present

Accepted Answer

I and II

Answer

I and III

Answer

II and III

Answer

I, II and III

Question 10

How do volcanoes support life on Earth?

Accepted Answer

It helps in nutrient cycling.

Answer

t provides heat through magma release

Answer

It produces gas that cools the Earth.

Answer

It changes the topography of the Earth’s crust.

Question 11

If Earth is smaller than its size, how will you describe its atmosphere?

Accepted Answer

It will have a thinner atmosphere

Answer

The size will not affect the Earth’s atmosphere

Answer

It will have a thicker atmosphere

Answer

Both A and B are correct

Question 12

What is the most important factor that determines Earth’s temperature?

Accepted Answer

distance from the sun

Answer

gas in the atmosphere

Answer

size of the orbit

Answer

amount of water on the planet

Question 13

Which of the following statement is TRUE?

Accepted Answer

Living organisms can harness energy from the sun

Answer

Living organisms cannot harness energy from chemical substances

Answer

All of the above statements are true.

Answer

All living organisms can survive without sunlight

Question 14

Given its current position, if Earth is bigger than its size, how will you describe its atmosphere?

Accepted Answer

It will have a thinner atmosphere

Answer

Both A and B are correct

Answer

It will have a thicker atmosphere

Answer

The size will not affect the Earth’s atmosphere

Question 15

Which of the following best describes a greenhouse gas?

Accepted Answer

It is a gas that traps heat.

Answer

It is a gas that releases heat from Earth

Answer

It is a gas that shields Earth from radiation

Answer

It is a gas that provides protection from space.

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