Physical Science: Matter-Energy

A chemical substance that may dissolve some metals, turns litmus red, and is typically a corrosive or sour-tasting liquid is considered a ___________ .

• base

• gas

• acid

• salt

Lower pH solutions are strong bases. True or False?

• True

• False

The force that attracts a body toward the center of the earth, or toward any physical body having mass is the definition of _____________ .

• gravity

• motion

• friction

• force

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What is friction?

• Any interaction that, when unopposed, will change the motion of an object.

• A coherent, typically large body of matter with no definite shape.

• Force that resists the sliding or rolling of one solid object over another.

• Colliding into another object.

Which picture does not represent gravity?

• 
• 
• 
• 

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A car that is parked at the top of a hill is an example of what kind of energy?

• chemical energy

• potential energy

• kinetic energy

• physical energy

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What is kinetic energy?

• Energy which a body possesses by virtue of being in motion. Energy in motion.

• Energy stored in the bonds of compounds, like atoms and molecules.

• Energy that is stored in an object due to its position relative to some zero position. Energy at rest.

• Vibration of atoms and molecules within substances.

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This picture shows what type of frequency?

• high frequency

• low frequency

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Which picture shows low frequency?

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• 

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What are the four parts of a wave?

• Tough, Crust, Waveheight, Amplify

• Water, Salt, Hydrogen, Oxygen

• Crest, Trough, Amplitude, Wavelength

• Atoms, Molecules, Ions, Particles

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