Light Waves

Where do you find energy?

• • Energy is not present anywhere there are moving objects, sound, light, or heat.

• • Energy is present anywhere there are moving objects, sound, light, or heat.

• • Energy is only present where there are moving objects. Not where there is sound, light, or heat.

• • Energy is present only in sound, light, and sometimes heat.

How does energy move from one place to another?  

• Energy does not move from one place to another

• • Energy can be moved from one place to another by heating objects. When objects sit still, energy is transferred from one object to another, thereby changing its motion.

• • Energy can be moved from one place to another by moving objects or through sound, light, or electrical currents. When objects collide, energy is transferred from one object to another, thereby changing its motion.

• • Energy can be moved from one place to another by cooling objects, but not through sound, light, or electrical currents. When objects collide, energy is transferred from one object to another, thereby changing its tempature.

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How do you measure the amount of energy something has?

• The slower a given object is moving, the more energy it has. This only happens with very slow matter and can be measured in many different ways in the form of heat or electrical current.

• The smaller a given object is moving, the more energy it has. This can not happen with large matter and can be measured in many different ways in the form of heat or electrical current.

• The bigger a given object is moving, the more energy it has. This happens only with large matter and can be measured in many different ways in the form of heat or electrical current.

• The faster a given object is moving, the more energy it has. This happens with all matter and can be measured in many different ways in the form of heat or electrical current.

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What is a wave?

• • A wave has a repeating pattern with a specific wavelength, frequency, and amplitude.

• • A wave has a unique pattern with a specific wavelength, frequency, and amplitude.

• • A wave has a small pattern with a specific wavelength, frequency, and amplitude.

• • A wave has a large pattern with a specific wavelength, frequency, and amplitude.

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How does a light wave travel?

• • Light waves travel in waves lines. But when they hit an object, they bend in different directions and will travel in wavy lines in a different direction.

• • Light waves travel in straight lines. But when they hit an object, they bend in different directions and will travel in straight lines in a different direction.

• • Light waves do not travel in straight lines. When they hit an object, they break in different directions and will travel in straight lines in a different direction.

• • Light waves travel in bold red lines. They will travel in bright lines in the same direction.

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Define the following:

Amplitude:

• The weight of the wave from its resting point.

• The color of the wave from its resting point.

• The sound of the wave from its resting point.

• The height of the wave from its resting point.

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How can you describe the differences between waves?

• • You describe a wave by only its color. All waves have amplitude, wavelength, and frequency, but waves can be different from one another.

• • You describe a wave by only its size. Not all waves have amplitude, wavelength, and frequency, but waves can be different from one another.

• • You describe a wave by observing its properties. All waves have amplitude, wavelength, and frequency, but waves can be different from one another. For example, waves with higher amplitude will be louder (sound) and brighter (light) than waves with lower amplitude and wavelength.

• • You describe a wave by observing its actions. All waves have amplitude only. They do not have wavelength, and frequency, but waves can be different from one another. For example, waves with higher amplitude will be louder (sound) and brighter (light) than waves with lower amplitude and wavelength.

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Define the following:

Wavelength

• The sound of one wave measured from peak to peak.

• The color of one wave measured from peak to peak.

• The smell of one wave measured from peak to peak.

• The length of one wave measured from peak to peak.

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How is a sound wave different from a light wave?

• • Sound waves do not need to travel through matter, but light does need to travel through matter.

• • Sound waves needs to travel through matter, and light need to travel through matter.

• • Sound waves are smaller matter, but light does not need to travel through matter.

• • Sound waves needs to travel through matter, but light does not need to travel through matter.

Define: Frequency

• How many waves pass 2 points in 2 seconds.

• How many waves pass a point in 1 second.

• How many waves pass a point in 10 seconds.

• How a wave pass a point in 1 minute.