Properties of Mechanical Waves Vocab

The prefix 'trans'

• within

• below

• before

• across

Parallel means

• Lines that cross at a right angle.

• Lines or surfaces that are equidistant and never meet

• Surfaces that are curved and meet at one point

• Lines that are randomly spaced and cross

Perpendicular

• Lines that are completely separate without touching.
• Lines that meet at an acute angle.
• Lines that cross or meet at a right angle.

• Lines that are parallel to each other.

Mechanical Waves

• Mechanical waves do not require a medium to propagate.
• Mechanical waves require a medium to propagate.
• Mechanical waves are only found in liquids.
• Mechanical waves can travel through a vacuum.

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When we study waves, a medium is

• the path a wave takes
• the frequency of a wave
• the substance through which a wave travels
• empty space through which a wave travels

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Wave mediums can be

• anything at all, even empty space

• vacuum
• only liquids

• solids, liquids, gases

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A wave in which the disturbance of the medium moves perpendicular to the direction of wave energy

• Longitudinal wave
• Transverse wave
• Electromagnetic wave
• Mechanical wave

A wave in which the disturbance of the medium moves parallel to the direction of wave energy

• Standing wave
• Compressional wave

• Surface wave
• Transverse wave

Sound waves are

• Sound waves are electromagnetic waves.
• Sound waves are compressional waves.

• Sound waves travel faster in a vacuum than in air.
• Sound waves are transverse waves.

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NGSS.MS-PS4-1

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Wave energy always travels away from the

• source
• atmosphere
• land
• medium

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