8th Grade Science Reveiw

Front

What is a longitudinal wave?

Back

A longitudinal wave is a type of wave in which the particles of the medium move parallel to the direction of the wave's propagation. An example is a sound wave.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. Formula: Average Speed = Total Distance / Total Time.

Front

What is the formula for density?

Back

Density is calculated using the formula: Density = Mass / Volume.

Front

What is surface tension?

Back

Surface tension is a property of liquids that causes the surface to behave like a stretched elastic membrane, allowing it to resist external force.

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, such as iron rusting.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the unit of speed in the metric system?

Back

The unit of speed in the metric system is meters per second (m/s).

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Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the relationship between mass, volume, and density?

Back

Density is the ratio of mass to volume. If mass increases while volume remains constant, density increases.

Front

What are the states of matter?

Back

The states of matter are solid, liquid, gas, and plasma, each defined by the arrangement and energy of particles.

Tags

NGSS.MS-PS1-4

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water.

Tags

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