7th grade review

Front

What is groundwater?

Back

Groundwater is water that is found underground in soil and rock layers, and it is an important source of drinking water.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Front

What is a common source of nitrate pollution in groundwater?

Back

The use of fertilizers by farmers and homeowners is a common source of nitrate pollution in groundwater.

Front

Why is it important for scientists to publish all steps of their experiments clearly?

Back

It allows other scientists to replicate their results and verify findings.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Front

What happens to thermal energy when a cold metal spoon is placed in boiling water?

Back

Thermal energy is transferred from the water to the spoon, causing the spoon to become hot.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Tags

NGSS.MS-PS1-2

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is an experiment?

Back

An experiment is a procedure carried out to test a hypothesis and observe the effects of changing one or more variables.

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS1-2

Front

What is the role of a control in an experiment?

Back

A control is a standard for comparison in an experiment, helping to isolate the effects of the independent variable.

Tags

NGSS.MS-PS1-2

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time.