Unit 2 - Parts 4 &5 Practice

What is the process called when sunlight breaks gas molecules into smaller components?

• Photosynthesis

• Photolysis

• Phototropism

• Photophobia

What are the components formed when water is broken up by sunlight?

• Oxygen (O2) and Carbon Dioxide (CO2)

• Hydrogen (H) and Hydroxide (OH)

• Nitrogen (N2) and Oxygen (O2)

• Carbon (C) and Hydrogen (H)

Which type of UV radiation has the shortest wavelength and is absorbed by the atmospheric ozone?

• UVA

• UVB

• UVC

• UVX

Tags

NGSS.HS-PS4-3

What event around 2.5 billion years ago led to an increase in oxygen in Earth's atmosphere?

• The evolution of photosynthetic organisms

• The extinction of dinosaurs

• The formation of the ozone layer

• The arrival of humans

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What did the Cyanobacteria do to start the Great Oxidation Event?

• Photosynthesis

• Chemosynthesis

• Created Ozone

• Released CO2

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the most abundant gas in the Earth's atmosphere?

• Oxygen

• Argon

• Nitrogen

• Carbon Dioxide

Which gas makes up approximately 21% of the Earth's atmosphere?

• Nitrogen

• Oxygen

• Argon

• Carbon Dioxide

Why do anaerobic organisms struggle in environments with high oxygen levels?

• They thrive in oxygen-rich environments.

• They lack enzymes to protect against oxygen toxicity.

• They use oxygen to produce energy.

• They have an abundance of protective enzymes.

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-5

Which process is primarily responsible for the removal of carbon dioxide from Earth's early atmosphere?

• Evaporation

• Respiration

• Photosynthesis

• Volcanic eruptions

Tags

NGSS.MS-LS1-6

What is the main function of the ozone layer in Earth's atmosphere?

• To reflect visible light

• To produce oxygen

• To absorb harmful ultraviolet radiation

• To trap heat from the sun