Earth Systems and Environmental Concepts

The video explores Earth's four systems: lithosphere, hydrosphere, atmosphere, and biosphere. It explains their characteristics, processes, and interactions. The lithosphere involves tectonic activities, the hydrosphere includes the water cycle, the atmosphere protects from UV radiation, and the biosphere encompasses all living things. The video also discusses how these systems interact, using examples like volcanic eruptions affecting multiple spheres.

What is a defining characteristic of a closed system like Earth?

• Exchange of matter and energy

• No exchange of matter or energy

• Exchange of energy but not matter

• Exchange of matter but not energy

Which of the following is NOT one of the four systems of Earth?

• Lithosphere

• Hydrosphere

• Astrosphere

• Biosphere

What is the lithosphere primarily composed of?

• Living organisms

• Gases and vapors

• Rocky crust, mantle, and core

• Water and ice

Which process is a key feature of the hydrosphere?

• Photosynthesis

• Water cycle

• Carbon cycle

• Nitrogen cycle

What percentage of the atmosphere is composed of nitrogen?

• 78%

• 50%

• 1%

• 21%

Which type of UV radiation has the longest wavelength?

• None of the above

• UVA

• UVC

• UVB

What is a natural example of a carbon sink?

• A car

• A factory

• A tree

• A plastic bottle

How do volcanic eruptions affect the hydrosphere?

• They increase the water temperature

• They can pollute water bodies

• They decrease water levels

• They have no effect

What is the effect of increased carbon dioxide on the atmosphere?

• It causes cooling

• It leads to global warming

• It reduces oxygen levels

• It has no effect

Which Earth system is directly affected by acid rain?

• Biosphere

• Atmosphere

• Hydrosphere

• Lithosphere