Light It Up! Unit 7 Vocab Lesson

​Light It Up: Light Energy 5.6

By Kellee Sweeney

Transverse Waves

Light is a form of  RADIANT ENERGY that travels as a transverse wave in a straight path.

Radiant energy can produce thermal energy depending on how it's used.

Radiant energy and thermal energy ARE NOT the same.

It DOES NOT need a medium through which to move.

​Amplitude in a transverse wave refers to brightness

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Light travels in a ​

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line.

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Drag and Drop the answer to match the numbers below

Use the picture provide <-----

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Drag these tiles and drop them in the correct blank above

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Energy

Frequency

Wavelength

Amplitude

Wave

Digital

Multiple Choice

Light is a form of what type of energy?

• radiant energy

• thermal energy
• kinetic energy
• nuclear energy

Multiple Choice

Radiant energy can produce thermal energy, however radiant energy and thermal energy are not the same. True or False?

• False
• True

Multiple Choice

The sun is an example of radiant energy producing...

• light and heat
• cold and frost
• clouds and storms
• wind and rain

Multiple Choice

Transverse waves travel in a...

• circular motion

• straight path

• left to right

• least to greatest

Multiple Choice

Amplitude in a transverse wave refers to its...

• color

• volume

• brightness

• range

Multiple Choice

Light does not need a medium to travel through.

• True
• False

Light

Visible light is a form of radiant energy that can be seen and can interact in different ways when it contacts an object.   

Energy may take different forms, including radiant energy. Radiant energy that can be seen by the human eye is called visible light.

The visible spectrum has a range of colors that are determined by wavelength. The colors of the visible spectrum from the longest wavelength to the shortest wavelength are red, orange, yellow, green, blue, and violet (ROYGBV). 

The sum of these colors is white light.

Visible Light Frequency

Frequency is the number of waves passing a given point in a designated time. The greater the frequency, the greater the amount of energy. 

Multiple Choice

Radiant energy that can be seen by the human eye is called...

• radio waves
• ultraviolet light
• visible light
• infrared radiation

Multiple Choice

Which color has the longest wavelength and shortest frequency?

• Yellow

• Red

• Blue

• Violet

Multiple Choice

Which color has the shortest wavelength and highest frequency?

• Violet

• Yellow

• Orange

• Green

Multiple Choice

Which color on the visible spectrum (ROYGBV) produces the most energy?

• Violet
• Red
• Green
• Blue

Reflection Vs Refraction

Light travels in straight paths until it hits an object, where it is reflected, refracted, transmitted, and/or absorbed.

Refraction, or bending of waves, include:   

• refraction causing a setting sun to look flat  

• a spoon appearing to bend when immersed in a cup of water   

• a glass prism dispersing white light into its individual colors as the colors refract at different angles (as visible light exits the prism, it is refracted and separated into the visible spectrum).  

Reflection occurs when light bounces off an object.

Example of this is 

• light hitting a mirror.

Multiple Choice

Light travels in straight paths until...

• it is reflected,

  refracted, absorbed and transmitted

• it is turned off and turned back on

• it hits a solid object

• it travels to space

Multiple Choice

This is an example of

• reflection

• refraction

Multiple Choice

Why does the straw appear to be bent?

• light is reflected

• light is absorbed

• light is turned

• light is refracted

Multiple Choice

When does reflection occur?

• When light spins in a circle

• When light bounces off of an object

• When light passes through a medium.
• When sound travels in a vacuum.

Multiple Choice

What is the best explanation for Mickey seeing himself in the mirror?

• refraction

• absorbed

• reflection

• flipped

Light Passes Through

Light passes through some materials

• easily (transparent materials)

• partially (translucent materials)

• not at all (opaque materials)

light passes through easily

transparent

Some light passes through

​​translucent

no light passes through

​​opaque

Multiple Choice

When an object is transparent...

• It allows light to fully pass through

• It scatters light in all directions completely.
• It absorbs all light and does not allow it to pass

• It reflects all light

Multiple Choice

What type of material is this?

• translucent

• transparent

• opaque

Multiple Choice

These objects are translucent which means...

• Translucent objects allow some light to pass through

• Translucent objects reflect light without passing it through.
• Translucent objects create sharp and clear images.
• Translucent objects block all light completely.

Multiple Choice

In which of the following options are all materials transparent?

• Window, books, and stained glass

• Wooden table, books, and rocks

• Shower curtain, stained glass, and frosted window

• Clear water, window, and magnifying glass

Multiple Choice

In which of the following options are all the materials translucent?

• Window, books, and stained glass

• Wooden table, books, and rocks

• Shower curtain, stained glass, and frosted window

• Clear water, window, and magnifying glass

Multiple Choice

In which of the following options are all the materials opaque?

• Window, books, and stained glass

• Wooden table, books, and rocks

• Shower curtain, stained glass, and frosted window

• Clear water, window, and magnifying glass

Open Ended

What is one thing you learned from this lesson. Type a complete sentence. Try your best to spell.