Earth's Spheres Flashcardizz

Front

What are the four main spheres of Earth?

Back

1. Atmosphere - the layer of gases surrounding Earth. 2. Hydrosphere - all the water on Earth, including oceans, rivers, and lakes. 3. Geosphere - the solid part of Earth, including rocks and soil. 4. Biosphere - the regions of Earth where life exists.

Front

Define the atmosphere.

Back

The atmosphere is the layer of gases that surrounds Earth, composed mainly of nitrogen and oxygen, and is essential for life.

Front

What is the hydrosphere?

Back

The hydrosphere includes all the water on Earth, such as oceans, rivers, lakes, and groundwater.

Front

What does the geosphere consist of?

Back

The geosphere consists of the Earth's solid surface, including rocks, minerals, and soil.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists, including land, water, and the atmosphere.

Front

How do the atmosphere and geosphere interact?

Back

The atmosphere and geosphere interact through processes like weathering, where atmospheric conditions break down rocks.

Front

Give an example of the interaction between the biosphere and geosphere.

Back

Plants (biosphere) grow in soil (geosphere), relying on nutrients and minerals found in the ground.

Front

What is the significance of carbon dioxide in the atmosphere for plants?

Back

Plants require carbon dioxide from the atmosphere for photosynthesis, which is essential for their growth.

Front

What percentage of Earth's water is salt water?

Back

97.5% of Earth's water is salt water, primarily found in oceans.

Front

What elements are commonly found in the geosphere?

Back

Common elements in the geosphere include oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium.