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.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

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.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

Tags

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.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What would be a logical step to determine if a water source is acidic or basic?

• Taste the water.

• Check the water color.

• Use a pH meter or pH strips to measure the pH level.

• Smell the water.

Tags

DOK Level 1: Recall

Which of the following is NOT a component of an atom?

• Electron

• Neutron

• Proton

• Molecule

Tags

DOK Level 1: Recall

What is the atomic number of an element that has 17 protons?

• 15

• 17

• 20

• 12

Tags

DOK Level 1: Recall

What effect does the water cycle have on the total amount of water on Earth?

• The total amount of water on Earth is constantly increasing.

• The total amount of water on Earth is constantly decreasing.

• The total amount of water on Earth remains relatively constant.

• The total amount of water on Earth changes due to periods of global warming and cooling.

Tags

NGSS.MS-ESS2-4

Which best describes a method of obtaining energy that may cause changes in water temperature and harm to fish populations?

• burning coal

• using ethanol in cars

• installing solar panels on a home

• generating electricity in a hydroelectric power plant

Tags

NGSS.MS-LS2-4

Which is a nonrenewable resource?

• oil

• sunlight

• water

• wood