Hydrosphere
Atmosphere
Biosphere
Geosphere
Events
100

The frozen part of Earth's hydrosphere

What is the cryosphere

100

The layer of the atmosphere that is closest to Earth's surface?

What is the troposphere 

100

The process in which plants use sunlight to make simple sugars and oxygen out of water and carbon dioxide 

What is photosynthesis?

100

After sediments are deposited in a place, they can be compressed to create larger rocks called this

What are sedimentary rocks?

100

Large, swirling storms that form over warm ocean waters and sometimes they strike land

What is a hurricane

200

Water in the hydrosphere exists in these forms. 

What is lakes, oceans, rivers, and groundwater 

200

The layer of Earth's atmosphere that has a high concentration of ozone 

What is the stratosphere 

200

The earliest life forms of the biosphere that survived without oxygen 

What are prokaryotes (single-celled organisms such as bacteria and archaea.)

200

Hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling

What is magma?

200

Giant waves caused by earthquakes or volcanic eruptions under the sea

What is a Tsunami

300

The process where water collects in rivers, lakes and oceans. Then it evaporates into the atmosphere to start all over again. 

What is the water cycle

300

The layer of Earth's atmosphere where the the coldest temperatures are found 

What is the mesosphere

300

The biosphere has existed this long

What is about 3.5 billion years 

300

The processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion.

What is the rock cycle?

300

A prolonged period of abnormally low rainfall, leading to a shortage of water

What is drought?

400

This distinguishes our unique planet from other planets in the solar system

What is the abundance of liquid water on Earth 

400

These are the gases that the atmosphere is composed of. 

What is about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent. 

400

The variety of life in the world or in a particular habitat or ecosystem

What is biodiversity?

400

A scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements.

What is plate tectonics?

400

The most common and widespread of all weather-related natural disasters.

What is flooding

500

This is how the hydrosphere impacts the geosphere in the water cycle

What is that water sculpts landforms through erosion and the movement of minerals 

500

The atmosphere acts as a gigantic filter, keeping out what?

What is most ultraviolet radiation 

500

A community and the interactions of living and nonliving things in an area 

What is an ecosystem?

500

The movement of tectonic plates is made possible by this

What is thermal energy (heat)

500

When dead plants and other organic matter is submerged in swamp environments and subjected to the geological forces of pressure and heat, this is formed. 

What is coal?

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