Earth Science & Geology
Ecosystems & Biodiversity
Weather & Climate
Forests & Plants
Environmental Issues
100

What is the largest ocean on Earth?

Pacific Ocean

100

What do you call a community of living organisms interacting with the nonliving components of their environment?

Ecosystem

100

Which instrument is used to measure air temperature?

Thermometer

100

What part of a plant absorbs sunlight to make food?

Leaves

100

What term is used for harmful substances introduced into the environment?

Pollution

200

What is the hardest mineral?

Diamond

200

Which animal group includes mammals, birds, reptiles, amphibians, and fish?

Vertebrates

200

What is the general term for water falling from clouds, such as rain, snow, or hail?

Precipitation

200

What are trees that shed their leaves annually called?

Deciduous

200

What common action helps reduce the amount of waste sent to landfills?

Recycling

300

What term is used for the sudden, violent shaking of the ground caused by movement within the Earth's crust?

Earthquake

300

What is the term for a natural environment where a particular species lives?

Habitat

300

What visible water vapor in the air reduces visibility, often occurring in the morning?

Fog

300

What is the scientific term for the study of plants?

Botany

300

What term means cutting down large areas of trees?

Deforestation

400

What layer of the Earth lies directly beneath the crust?

Mantle

400

What is the layer of tropical trees that forms a dense overhead cover in a rainforest?

Canopy

400

What causes the seasons on Earth?

The tilt of the Earth's axis

400

What chemical compound gives plants their green color?

Chlorophyll

400

What environmental disaster is caused when sulfur dioxide and nitrogen oxides mix with water vapor in the atmosphere?

Acid Rain

500

Which primary type of rock is formed from the cooling and solidification of magma or lava?

Igneous

500

What specific region of the atmosphere is most responsible for filtering out the majority of the sun's damaging ultraviolet (UV) radiation?

Ozone layer (located in the stratosphere)

500

Which layer of the atmosphere is where all Earth's weather occurs?

Troposphere

500

What is the name of the waxy coating on plant leaves that prevents water loss?

Cuticle

500

What specific measure is used to quantify the amount of biologically productive land and water required to support a person or activity?

Ecological Footprint

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