About this Study Set
This study set covers Earth Science through
25 practice questions.
A collection of factual questions covering Earth science, ecosystems, and wildlife biology. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 25 questions from the
Earth Science and Nature Facts study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which layer of the Earth's atmosphere contains the ozone layer?
-
A
Troposphere
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B
Stratosphere
-
C
Mesosphere
-
D
Thermosphere
2
What is the primary gas that makes up the Earth's atmosphere?
-
A
Oxygen
-
B
Carbon Dioxide
-
C
Nitrogen
-
D
Argon
3
Which biome is characterized by low temperatures and a layer of permanently frozen subsoil?
-
A
Tundra
-
B
Taiga
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C
Savanna
-
D
Chaparral
4
What is the largest living structure on Earth, visible from space?
-
A
The Amazon Rainforest
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B
The Great Barrier Reef
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C
The Himalayas
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D
The Sahara Desert
5
Which mineral is the most abundant in the Earth's continental crust?
-
A
Quartz
-
B
Feldspar
-
C
Calcite
-
D
Mica
6
What type of rock is formed from the cooling and solidification of molten magma?
-
A
Sedimentary
-
B
Metamorphic
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C
Igneous
-
D
Conglomerate
7
Which animal is considered the fastest land mammal?
-
A
Lion
-
B
Cheetah
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C
Pronghorn
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D
Gazelle
8
What is the process by which green plants convert light energy into chemical energy?
-
A
Respiration
-
B
Transpiration
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C
Photosynthesis
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D
Fermentation
9
Which ocean is the largest and deepest on Earth?
-
A
Atlantic
-
B
Indian
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C
Arctic
-
D
Pacific
10
What is the main cause of tides on Earth?
-
A
Wind patterns
-
B
Earth's rotation
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C
The Moon's gravitational pull
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D
Solar radiation
11
Which element is essential for all known forms of life?
-
A
Gold
-
B
Carbon
-
C
Iron
-
D
Helium
12
What part of a tree is responsible for absorbing water and minerals from the soil?
-
A
Leaves
-
B
Trunk
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C
Roots
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D
Bark
13
Which cloud type is often associated with thunderstorms?
-
A
Cirrus
-
B
Cumulonimbus
-
C
Stratus
-
D
Altocumulus
14
What is the term for the variety of all living organisms in a particular habitat or ecosystem?
-
A
Biodiversity
-
B
Biosphere
-
C
Biomass
-
D
Biogeography
15
Which geological process involves the breaking down of rocks by weather, water, or plants?
-
A
Deposition
-
B
Erosion
-
C
Weathering
-
D
Subduction
16
In which region are rainforests primarily located?
-
A
Polar regions
-
B
Equatorial regions
-
C
Subtropical deserts
-
D
High-latitude mountains
17
Which animal group is considered ectothermic, meaning they rely on external sources of heat?
-
A
Mammals
-
B
Birds
-
C
Reptiles
-
D
Marsupials
18
What gas do animals exhale as a byproduct of cellular respiration?
-
A
Oxygen
-
B
Nitrogen
-
C
Methane
-
D
Carbon Dioxide
19
What is the hardest natural substance found on Earth?
-
A
Quartz
-
B
Topaz
-
C
Diamond
-
D
Corundum
20
Which layer of the Earth lies directly below the crust?
-
A
Inner core
-
B
Outer core
-
C
Lithosphere
-
D
Mantle
21
What is the primary source of energy for the Earth's weather systems?
-
A
The Moon
-
B
The Sun
-
C
Geothermal heat
-
D
Ocean currents
22
Which of these is a non-renewable natural resource?
-
A
Wind
-
B
Solar
-
C
Coal
-
D
Tidal
23
What are the large tectonic plates that make up the Earth's outer shell called?
-
A
The lithosphere
-
B
The asthenosphere
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C
The hydrosphere
-
D
The atmosphere
24
Which species of bear is specifically adapted to life in the Arctic?
-
A
Grizzly bear
-
B
Black bear
-
C
Polar bear
-
D
Panda bear
25
What is the name of the scale used to measure the intensity of earthquakes?
-
A
Richter scale
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B
Beaufort scale
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C
Fujita scale
-
D
Celsius scale
