Science Quiz

What statement best explains how the Sun produces energy?

• The Sun produces energy by the process of nuclear fission.

• The Sun produces energy by the process of oxidation.

• The Sun produces energy by the process of combustion.

• The Sun produces energy by the process of nuclear fusion.

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Which type of Earth motion has the greatest effect on Earth's seasons?

• nutation

• precession

• revolution

• rotation

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Mrs. Tyson buys a new car because her Jeep doesn't get good gas mileage and is bad for the environment. She buys a small car to drive to work.

Which new method of transportation would reduce the commuter's carbon footprint?

• riding a city bus

• driving a sport utility vehicle

• riding a helicopter

• driving a pickup truck

A community decides to upgrade its wastewater treatment and water purification systems. What lasting impact could this have?

• It could cause an increase in waterborne disease

• It could cause a decrease in water levels

• It could cause an increase in the freshwater supply

• It could cause a decrease in water demand

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Why are the inner and outer planets fundamentally different?

• Due to random cosmic events

• Because of their proximity to the Sun during formation

• Through later planetary migrations

• By external intervention

Which of the following best describes the relationship between photosynthesis and the carbon cycle?

• Photosynthesis adds carbon to the atmosphere.

• Photosynthesis removes carbon from the atmosphere.

• Photosynthesis converts carbon into fossil fuels.

• Photosynthesis decreases carbon in the hydrosphere.

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Which two of Earth's subsystems are most immediately affected by surface mining?

• lithosphere and atmosphere

• biosphere and hydrosphere

• lithosphere and biosphere

• atmosphere and hydrosphere

Why are island communities more vulnerable to rising sea levels?

• They experience fewer natural disasters

• They have advanced infrastructure to manage flooding

• They are isolated and cannot evacuate easily

• Rising sea levels decrease their economic activity

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Most ultraviolet (UV) rays are deflected or absorbed by the atmosphere. What stops these rays?

• Nitrogen

• Ozone

• Water

• Chlorofluorocarbons (CFC)

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Which of the following affects the density of ocean water?

• animals

• melting point

• hydrogen atoms

• salinity

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