Jose conducted an experiment to measure the rate of minerals dissolving in water and changed the temperature of the water for each trial. What is the independent variable in this experiment?

• rate the minerals dissolved

• temperature of the water

• number of trials being tested

• type of minerals used for each trial

Tags

NGSS.MS-PS3-4

How could a farmer keep a hillside from eroding during a rainy season?

• Build trails around the edges for people to walk

• Plant crops and trees to hold the soil in place

• Plow the topsoil of the hillside to loosen the dirt

• Let livestock graze on the hill each day

Identify each example of a nonrenewable energy source.

• Petroleum

• Natural gas

• Coal

• Geothermal

• Biomass

Tags

NGSS.HS-ESS3-1

Which of the following identifies the earth’s revolution?

• 2

• 1

• 3

Tags

NGSS.MS-ESS1-2

Please select the statement below that is true about this picture.

• All of the natural resources are nonrenewable.

• All of the natural resources are created through human techniques.

• Some of these energy sources are renewable and some are non-renewable.

• All of the natural resources are renewable.

Conservation policies —

• suggest actions that only logging companies should enforce

• work with water resources to enhance diversity in the ecosystem

• create standards of maintaining and restoring a healthy Earth environment

• restore only nonrenewable resources back to their original status

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

What is the energy source of the water cycle?

• Evaporation

• Sun

• Precipitation

• Clouds

Tags

NGSS.MS-ESS2-4

What causes the Earth to have seasons?

• The tilt of the Earth's axis

• The distance of the Earth from the Sun

• The revolution of the Earth around the Sun

• The tilt of the Earth’s axis and the revolution of the Earth around the Sun

Tags

NGSS.MS-ESS1-1

Read the hypothesis: If coal is used to heat a school building, then the amount of air pollution around the building will increase. What is the dependent variable in this experiment?

• Amount of air pollution

• Type of resources

• Type of pollution

• Amount of coal used

Tags

NGSS.MS-ESS3-4

In which of the following locations would a hurricane be the strongest?

• In mild temperate ocean waters

• On mild land surrounded by mountains

• In warm tropical ocean waters

• On warm land located near a body of water

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

NGSS.MS-ESS3-2