Earth's Systems: Interactive Learning Quizzes for Second Graders

Question 1

What is NOT found in the air we breathe?

Accepted Answer

Metal

Answer

Nitrogen

Answer

Water vapor

Answer

Oxygen

Question 2

What is the process called when water turns from a liquid to a gas in the water cycle?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Precipitation

Question 3

What is the key difference between the geosphere and the biosphere?

Accepted Answer

The geosphere is the solid part of the Earth, while the biosphere is the living part.

Answer

The geosphere is the part of the Earth covered in water, while the biosphere is the part covered in air.

Answer

The geosphere is the atmosphere, while the biosphere is the hydrosphere.

Answer

The geosphere is made up of living things, while the biosphere is made up of non-living things.

Question 4

The greenhouse effect traps heat from the sun in Earth's atmosphere, making it warmer. What are some potential consequences of the greenhouse effect?

Accepted Answer

Sea levels could rise as ice caps melt.

Accepted Answer

Hurricanes could become stronger and happen more often.

Answer

Plants might not grow as well because they get less sunlight.

Question 5

How can human activities harm Earth's systems?

Accepted Answer

Cutting down trees and burning gasoline in cars

Answer

Cleaning up trash and recycling

Question 6

How does the geosphere affect the Earth's surface and events like earthquakes and volcanic eruptions?

Accepted Answer

It shapes landforms like mountains and volcanoes.

Answer

It controls the Earth's climate.

Answer

It moves water and carbon around the Earth.

Answer

It has no effect on earthquakes or volcanic eruptions.

Question 7

Which layer of Earth's atmosphere is closest to the ground and contains the air we breathe?

Accepted Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Question 8

Which of these is not a type of rock?

Accepted Answer

Plastic

Answer

Igneous

Answer

Sedimentary

Question 9

How do the Earth's poles influence the flow of ocean currents?

Accepted Answer

The poles are cold, causing the ocean water to sink and move away from them.

Answer

The poles create strong winds that push the ocean currents.

Answer

The poles attract the ocean water, causing it to move in circles.

Answer

The poles warm the water at the equator, creating convection currents.

Question 10

Which of the following is the main difference between the Earth's crust and mantle?

Accepted Answer

The mantle is hotter than the crust.

Answer

The mantle is cooler than the crust.

Answer

The mantle is liquid, while the crust is solid.

Answer

The crust is hotter than the mantle.

Question 11

How can our actions affect water resources like rivers and lakes?

Accepted Answer

Our actions can cause water pollution and make it harder to find clean water for drinking and other uses.

Answer

Our actions have no effect on water resources because water is always available.

Answer

Water pollution only hurts fish and other animals, not people.

Question 12

Which type of rock holds clues about ancient living things, like plants and animals?

Accepted Answer

Sedimentary rocks

Answer

Metamorphic rocks

Answer

Igneous rocks

Answer

Volcanic rocks

Question 13

Which of these is the reason why the North and South Poles are colder than the middle of the Earth?

Accepted Answer

They receive less sunlight

Answer

They are closer to the Sun

Answer

They have more clouds

Question 14

What makes the Earth's big pieces of crust, called tectonic plates, move?

Accepted Answer

Heat moving inside the Earth's middle layer

Answer

The Earth spinning

Answer

Volcanoes erupting

Answer

The Earth's magnetic field

Question 15

How do living things, like plants and animals, influence the Earth's rocks and minerals?

Accepted Answer

They release minerals into the soil that can form rocks.

Accepted Answer

They break down rocks into smaller pieces.

Answer

They create entirely new rocks and minerals.

Answer

Living things have no impact on rocks and minerals.

Question 16

What happens to liquid water when it gets hot enough?

Accepted Answer

It turns into water vapor.

Answer

It turns into ice.

Answer

It stays the same.

Answer

It disappears.

Question 17

How do the oceans contribute to the water cycle and influence the distribution of water on Earth?

Accepted Answer

The oceans cover a vast area, absorbing sunlight and causing water to evaporate, forming clouds.

Answer

The oceans store most of Earth's water, but they don't play a significant role in the water cycle.

Answer

The oceans only add water to the cycle through rain and snow, without releasing water vapor into the air.

Answer

The oceans have no impact on the distribution of water on Earth.

Question 18

In different habitats within the Earth's biosphere, how do animals rely on their surroundings and help keep the environment healthy?

Accepted Answer

Animals get food and shelter from plants, while plants benefit from animals spreading their seeds and helping them make flowers.

Answer

Animals fight each other for food and shelter, which can make some animals disappear.

Answer

Animals don't affect the health of their surroundings.

Answer

Animals only take from their surroundings and don't give anything back.

Question 19

How do tiny pieces of rocks in the ground help create soil?

Accepted Answer

They break apart and make spaces for air and water to get into the soil.

Answer

They add food for plants to grow in the soil.

Answer

They bring bugs and animals that mix up the soil.

Question 20

What makes the biosphere unique compared to other Earth systems?

Accepted Answer

It contains living organisms.

Answer

It regulates Earth's temperature.

Answer

It consists of rocks and minerals.

Answer

It holds water in various forms.

Question 21

Why does the Earth experience different seasons, such as winter, spring, summer, and fall?

Accepted Answer

The Earth's axis, an imaginary line between the North and South Poles, is tilted.

Answer

The Earth's path around the sun changes shape throughout the year.

Answer

The sun's energy changes throughout the year.

Answer

The Earth's distance from the sun changes throughout the year.

Question 22

How many animals can live in a habitat without harming the environment?

Accepted Answer

The number of animals that the habitat can support without being harmed

Answer

The number of animals that are currently living in the habitat

Answer

The number of different types of animals that live in the habitat

Question 23

Which of these gases does NOT contribute to the greenhouse effect?

Accepted Answer

Oxygen

Answer

Water vapor

Answer

Carbon dioxide

Answer

Methane

Question 24

How do everyday actions like driving or using electricity impact the air we breathe and our planet's climate?

Accepted Answer

They release things into the air that trap heat, which can change the weather and climate.

Answer

They make more oxygen in the air, making it easier to breathe.

Answer

They don't affect the air we breathe or the climate.

Answer

They clean the air by taking out harmful things.

Question 25

What is the name of the journey that water takes from the Earth to the sky and back again?

Accepted Answer

Water cycle

Answer

Rain cycle

Answer

Cloud cycle

Answer

Evaporation cycle

Question 26

Which of these is the biggest ocean in the world?

Accepted Answer

Pacific Ocean

Answer

Atlantic Ocean

Answer

Indian Ocean

Answer

Arctic Ocean

Question 27

What is the hard outer layer of the Earth called?

Accepted Answer

Lithosphere

Answer

Atmosphere

Answer

Hydrosphere

Answer

Biosphere

Question 28

Which of these is NOT a type of rock?

Accepted Answer

Plastic

Answer

Igneous

Answer

Metamorphic

Answer

Sedimentary

Question 29

Where do living things live on Earth?

Accepted Answer

Biosphere

Answer

Atmosphere

Answer

Geosphere

Answer

Hydrosphere

Question 30

Which of these is NOT part of an ecosystem?

Accepted Answer

Rocks

Answer

Animals

Answer

Plants

Answer

Water

Question 31

What gives energy to all living things on Earth?

Accepted Answer

The sun

Answer

The wind

Answer

The rain

Answer

The ocean

Question 32

Which of the following is NOT a part of the Earth?

Accepted Answer

Biome

Answer

Land

Answer

Water

Answer

Air

Question 33

What is the process where water turns into gas and rises into the air called?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Precipitation

Answer

Runoff

Question 34

Which of these is a gas that traps heat in the Earth's atmosphere?

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Helium

Question 35

Which of these is the biggest ocean in the world?

Accepted Answer

Pacific Ocean

Answer

Atlantic Ocean

Answer

Indian Ocean

Answer

Arctic Ocean

Question 36

Which of these is a resource that can be replaced naturally?

Accepted Answer

Solar energy

Answer

Coal

Answer

Oil

Answer

Natural gas

Question 37

What is the biggest source of energy for the Earth's weather?

Accepted Answer

The sun

Answer

The moon

Answer

The Earth's core

Answer

The ocean currents

Question 38

What is the name of the layer of air closest to the Earth?

Accepted Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Answer

Thermosphere

Question 39

Which type of cloud is often seen on clear days?

Accepted Answer

Cirrus

Answer

Cumulus

Answer

Stratus

Answer

Nimbus

Question 40

What is the process where rocks get broken down into smaller pieces called?

Accepted Answer

Weathering

Answer

Erosion

Answer

Deposition

Answer

Metamorphism

Question 41

The part of the Earth where all living things can be found is called the:

Accepted Answer

Biosphere

Answer

Atmosphere

Answer

Hydrosphere

Answer

Geosphere

Question 42

The layer of gases that surrounds the Earth is known as the:

Accepted Answer

Atmosphere

Answer

Hydrosphere

Answer

Geosphere

Answer

Biosphere

Question 43

All the water on Earth is part of the:

Accepted Answer

Hydrosphere

Answer

Atmosphere

Answer

Geosphere

Answer

Biosphere

Question 44

The solid part of the Earth is called the:

Accepted Answer

Geosphere

Answer

Atmosphere

Answer

Hydrosphere

Answer

Biosphere

Question 45

Which of these is NOT something that affects the Earth's climate?

Accepted Answer

The moon

Answer

The atmosphere

Answer

The hydrosphere

Answer

The geosphere

Question 46

When water on the Earth's surface changes into clouds, it is a process called:

Accepted Answer

Evaporation

Answer

Condensation

Answer

Precipitation

Answer

Transpiration

Question 47

The force that pulls objects towards the center of the Earth is called:

Accepted Answer

Gravity

Answer

Magnetism

Answer

Friction

Answer

Inertia

Question 48

Day and night happen because of:

Accepted Answer

The Earth spinning around

Answer

The Earth orbiting the sun

Answer

The moon spinning around

Answer

The sun spinning around

Question 49

The imaginary line that divides the Earth into two equal halves is called the:

Accepted Answer

Equator

Answer

Prime Meridian

Answer

International Date Line

Answer

Tropic of Cancer

Question 50

Which of these resources can be replaced naturally over time?

Accepted Answer

Wind

Answer

Coal

Answer

Natural gas

Answer

Oil

Question 51

Which of these is not part of the air around us?

Accepted Answer

Rocks

Answer

Nitrogen

Answer

Carbon dioxide

Answer

Water

Question 52

How does water move up from the ground into the air?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Precipitation

Answer

Transpiration

Question 53

When hot, melted rock cools and hardens, it makes which kind of rock?

Accepted Answer

Igneous

Answer

Sedimentary

Answer

Metamorphic

Answer

Volcanic

Question 54

Mushrooms help put nutrients back into the soil. What are they called?

Accepted Answer

Decomposers

Answer

Producers

Answer

Consumers

Answer

Predators

Question 55

How do the earth's air, water, rocks, and living things work together?

Accepted Answer

They share things like air, water, and plants and animals.

Answer

They don't affect each other.

Answer

They are completely separate.

Answer

They are not connected in any way.

Question 56

What makes things fall down to the ground?

Accepted Answer

Gravity

Answer

Friction

Answer

Magnetism

Answer

Electricity

Question 57

How do plants make the air we breathe?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Evaporation

Question 58

Which of these is NOT a part of the Earth's systems?

Accepted Answer

Technology

Answer

Atmosphere

Answer

Hydrosphere

Answer

Geosphere

Question 59

What is the layer of air that surrounds the Earth called?

Accepted Answer

Atmosphere

Answer

Geosphere

Answer

Hydrosphere

Answer

Biosphere

Question 60

Which part of the Earth's systems includes all living things?

Accepted Answer

Biosphere

Answer

Geosphere

Answer

Hydrosphere

Answer

Atmosphere

Question 61

What is the process by which water evaporates from the Earth's surface and returns as rain called?

Accepted Answer

Water cycle

Answer

Erosion

Answer

Weathering

Answer

Photosynthesis

Question 62

Which of these is an example of a renewable resource?

Accepted Answer

Sunlight

Answer

Oil

Answer

Coal

Answer

Natural gas

Question 63

What is the name of the force that pulls objects towards each other?

Accepted Answer

Gravity

Answer

Magnetism

Answer

Friction

Answer

Electricity

Question 64

What is the name of the imaginary line that separates the Northern and Southern Hemispheres?

Accepted Answer

Equator

Answer

Tropic of Cancer

Answer

Prime Meridian

Answer

International Date Line