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Waves
8th grade science
| Question | Answer |
|---|---|
| The material or substance through which a wave may travel is called the ____________. | medium |
| Sound waves travel by ___________ of particles. | vibration |
| Waves that require a medium are called ______________ waves. | mechanical waves |
| Waves that do not require a medium are ___________________ waves. | electromagnetic waves |
| Sound travels faster in a solid than a liquid or a gas. That is because the denser or more concentrated the medium, the ____________ sound will travel. | faster |
| A transverse wave that does not require a medium is called an ____________________ wave. | electromagnetic wave |
| ___________ waves are waves in which the particles of the medium vibrates in an up and down motion. | transverse |
| Particles of a transverse wave move _________________ to the direction that the wave is traveling. | perpendicular |
| The _________ is the highest point of a transverse wave. | crest, the top of the wave |
| The _________ is the lowest point of a transverse wave. | trough, the bottom of the wave |
| The ___________ of a wave is the maximum distance of the wave vibration from its rest position to the crest. | amplitude |
| The _________ position of a wave is where the particles of a medium stay when there are no disturbances. | rest |
| The larger the amplitude, the greater the ___________ of the wave. | energy |
| _______________ is the distance between two adjacent crests or compressions in a wave. | wave length |
| ______________ is the number of waves produced in a given amount of time. | frequency |
| Frequency is expressed in ____________ (Hz). | hertz (still Hz) |
| Higher frequency, just like higher amplitude, means more ______________. | more energy |
| Sound waves travel fastest in _____________ and slowest in air. | solids |
| The __________ of a sound wave is directly related to the frequency. | pitch |
| A dog whistle has a _____________ frequency. | high |
| _____________ waves are waves in which the particles of the medium vibrate back and forth along the path that the wave travels. | longitudinal waves |
| A _____________ is a section of longitudinal wave where the particles are crowded together. | compression |
| A _____________ is a section of the wave where particles are less crowded. | rarefaction |
| _________ waves are longitudinal waves. | sound |
| List the seven types of electromagnetic waves in the electromagnetic spectrum - from lowest frequency to highest frequency. | radio, microwave, infrared, visible-light, ultraviolet, x-ray, gamma |
| _____________ occurs when a wave bounces back after striking a barrier. | reflection |
| Reflected sound waves are called an _______. | echo |
| Light travels at different speeds in different materials. This is why light ___________, or bends as it enters a new substance. | refracts |
| The surface of a red apple __________ all the colored light rays, except for red. | asorbs |
| The red light from an apple is _____________ to the eye. | reflected to the eye |
| ___________ is the bending of waves around a barrier or through an opening. | defraction |
| ___________ waves travel around corners better because it has larger wavelengths than light. | sound |
| ____________ is when light is taken in by an object. | absorption |
| A lens that is thicker in the middle is called a ____________ lens. | convex |
| A lens that is thinner in the middle is called a ____________ lens. | concave |
| A convex lens bends light ____________. | inward |
| A wave is any disturbance that transmits ___________ through matter or space. | energy |
Created by:
paytonpandaathena
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