NC Science

Which is most likely a major concern associated with burning fossil fuels?

• Burning fossil fuels can pollute the oceans.

• Burning fossil fuels can remove harmful chemicals from precipitation.

• Burning fossil fuels can remove carbon dioxide from the atmosphere.

• Burning fossil fuels can produce smog, which can cause respiratory illnesses.

How would a large increase in the salinity of an estuary most likely affect the ecosystem of the estuary?

• All organisms would die.

• All organisms would continue to live as they now do.

• The number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease.

• The number of salt-intolerant organisms would increase, and the number of salt-tolerant organisms would decrease.

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Which best explains why all of the Earth’s freshwater is not available for human use?

• Most of Earth’s freshwater is only in lakes.

• Most of Earth’s freshwater is underground.

• Most of Earth’s freshwater is still in the water cycle.

• Most of Earth’s freshwater is frozen water

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NGSS.MS-ESS2-4

If a lake has excess levels of phosphates and nitrates in its water, what will most likely result?

• The temperature of the lake water will decrease.

• The turbidity levels of the lake will decrease.

• The dissolved-oxygen levels in the lake will increase.

• The growth of algae in the lake will increase.

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Which of the following best describes the energy transformation in a bouncing ball?

• Kinetic to potential to kinetic

• Potential to kinetic to potential

• Thermal to kinetic to potential

• Electrical to kinetic to potential

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DOK Level 1: Recall

What type of energy transformation occurs when a lamp is turned on?

• Chemical to electrical

• Electrical to light

• Kinetic to thermal

• Potential to kinetic

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DOK Level 1: Recall

What is energy fundamentally described as?

• The ability to do work or produce heat

• A type of wave

• A chemical substance

• A form of matter

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DOK Level 1: Recall

Design a project to compare the effects of physical changes (such as temperature and pressure) on different states of matter.

• Heat and cool water, ice, and steam to observe changes in state and record temperatures at which these changes occur.

• Freeze and melt different metals to see which one has the highest melting point.

• Apply pressure to various solids to determine their hardness.

• Observe the color changes in substances when heated without measuring temperature.

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DOK Level 4: Extended Thinking

Which of the following is not a characteristic of gas?

• Has a definite volume

• Fills the shape of its container

• Can be compressed

• Expands to fill its container

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NGSS.MS-PS3-4

What is the term for the ability to do work or cause change?

• Power

• Energy

• Force

• Momentum

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