Physical science midterm review 2

Which of the following best explains why ice floats on liquid water?

• Ice is less dense than liquid water.

• Ice contains trapped air bubbles.

• Ice has a higher boiling point than water.

• Ice is a nonpolar molecule.

What is Earth's energy budget?

• The total amount of sunlight Earth reflects.

• The balance between energy absorbed and released.

• The amount of heat trapped by Earth's atmosphere.

• The sum of energy used by humans.

Ocean currents are driven by differences in water density, which is affected by both temperature and _______.

• Salinity

• Pressure

• Wind

• Humidity

Tags

NGSS.MS-ESS2-6

What is the "global conveyor belt"?

• A system of large, looping surface currents.

• A pattern formed by the combination of surface and deep currents.

• The interaction between temperature and salinity.

• The process by which energy moves through the ocean.

Tags

NGSS.MS-ESS2-6

What property of water causes it to form a "dome" shape when placed on a penny?

• High density

• Surface tension

• Low specific heat

• Nonpolar molecules

How is the Earth positioned in space to create seasons?

• The Earth is tilted.

• The Earth is flat.

• The Earth is upright.

• The Earth is upside down.

Tags

NGSS.MS-ESS1-1

What negative impact do human activities such as industry and agriculture have on natural systems?

• Increase in renewable energy sources.

• Soil erosion and loss of biodiversity.

• Improved water quality.

• Decreased fossil fuel usage.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is pollution?

• An unhealthy diet.

• Global warming.

• The process of making land, water, air, or other parts of the environment dirty and unsafe for use.

• Lands, people, and plants.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-ESS3-3

Convection currents bring _______-rich water from deep parts of the ocean to the surface, supporting marine life.

• Salt

• Nutrients

• Oxygen

• Currents

Tags

NGSS.MS-ESS2-1

Why is water referred to as a "universal solvent"?

• It reacts with all substances.

• It dissolves nonpolar molecules.

• It can dissolve a wide variety of solutes.

• It has the ability to evaporate quickly.