Convection and Density

What is the formula to calculate the density of a substance?

Which of the following statements is true about the density of fluids?

• Warm fluid is denser than cold fluid.

• Cold fluid is denser than warm fluid.

• Salt water is less dense than fresh water.

• All fluids have the same density.

What happens when fluids of different densities mix?

• They form a solid.

• They create convection currents.

• They separate into layers.

• They evaporate.

In the atmosphere, what causes air to rise?

• Air becomes cooler and more dense.

• Air becomes warmer and less dense.

• Air becomes saturated with water vapor.

• Air becomes more humid.

Tags

NGSS.MS-ESS2-5

What is the primary cause of convection currents in the hydrosphere?

• The rotation of the Earth.

• The uneven heating of the ocean.

• The gravitational pull of the moon.

• The presence of marine life.

Tags

NGSS.MS-ESS2-6

Which of the following is true about the geosphere?

• It consists only of solid rock.

• It includes the fluid mantle and liquid core.

• It is composed entirely of water.

• It is the same as the atmosphere.

Tags

NGSS.MS-ESS2-1

What is the effect of convection currents in the mantle?

• They cause the formation of clouds.

• They lead to the movement of tectonic plates.

• They create ocean currents.

• They generate wind patterns.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Which of the following best describes a fluid?

• A solid that can be compressed.

• A liquid, gas, or other material that flows under stress.

• A material that cannot change shape.

• A substance that is always gaseous.

What is the role of convection in the atmosphere?

• It causes the formation of mountains.

• It moves energy and causes wind.

• It creates ocean tides.

• It stabilizes the Earth's temperature.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

How long does it take for deep ocean currents to travel the globe?

• A few days

• A few months

• A few years

• 1000+ years

Tags

NGSS.MS-ESS2-6