Earth's Spheres

Front

What is the geothermal gradient?

Back

The geothermal gradient is the rate at which temperature increases with depth in the Earth's interior.

Front

How does the geothermal gradient change with depth?

Back

The geothermal gradient increases with depth.

Front

What is groundwater?

Back

Groundwater is water that fills the cracks and spaces in underground soil and rock layers.

Front

How is groundwater formed?

Back

Groundwater is formed as a result of precipitation that seeps into the ground.

Front

What are the components of the hydrosphere?

Back

The hydrosphere includes all water bodies such as oceans, rivers, lakes, glaciers, and groundwater.

Front

Which of the following is NOT a component of the hydrosphere?

Back

Mountains are not a component of the hydrosphere.

Front

What percentage of Earth's surface is covered by water?

Back

Approximately 70% of Earth's surface is covered by water.

Front

What is the main source of water in the hydrosphere?

Back

The main source of water in the hydrosphere is precipitation.

Front

What is the atmosphere?

Back

The atmosphere is the layer of gases surrounding Earth, essential for weather and climate.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists on Earth.