Light Energy

Light Energy

Exploring the wonders of light energy
5.6C

Reflection and Refraction

• Reflection: When light bounces off a surface, it changes direction.

• Refraction: When light passes through a medium, it bends due to a change in speed.

Multiple Choice

What is reflection?

• When light bounces off a surface, it changes direction.

• When light passes through a medium, it bends due to a change in speed.

Exploring Light Energy

• Transparent: Allows light to pass through completely
• Translucent: Allows some light to pass through, but scatters it
• Opaque: Does not allow light to pass through

Sources of Light

• Natural Sources: Sun, stars, fire

• Artificial Sources: Light bulbs, candles, flashlights

How Light Travels

• Light travels in straight lines: Light energy travels in a straight line until it encounters an obstacle or is refracted.

• Reflection: When light hits a surface, it can bounce back, changing its direction.

• Refraction: Light can also change direction when it passes through different mediums, like water or glass.

Prisms and Rainbows

• Prisms: Transparent objects that refract light, separating it into its component colors.
• Rainbows: Natural phenomena caused by the reflection, refraction, and dispersion of light in water droplets.
• Colors: Each color in a rainbow corresponds to a different wavelength of light.

Multiple Choice

What causes the separation of light into its component colors?

• Prisms

• Rainbows

• Colors

• Water droplets

Rainbows

Rainbows are formed when light is refracted, or bent, as it passes through water droplets in the air. This bending causes the light to separate into its component colors, creating the beautiful spectrum of colors we see in a rainbow. Prisms also separate light in a similar way.

Hotspot

Select the pictures that show refraction

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Select the statements below that represent refraction

Drag and Drop

Light will bounce off a ​

Placeholder

surface. Light refracts when it travels from one ​

Placeholder

to another.

Drag these tiles and drop them in the correct blank above

shiny

source

refraction

medium

bumpy

reflection

Hotspot

Where should a mirror be placed for the light to exit the maze? Point A, B, C, D?

Hotspot

Analyze the picture and decide if it shows an example of reflection or refraction.

Hotspot

Analyze the picture and decide if it shows an example of reflection or refraction.

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Select the statement(s) below about what is happening in the picture

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Where should a second mirror be placed for the light to exit the maze?

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Select the correct statements

Dropdown

Light travels in a ​

Select answer

line. When light travels from air to glass it ​

Select answer

or bends. If light hits a shiny surface, it will ​

Select answer

or bounce.

Hotspot

Analyze the picture and decide if it shows an example of reflection or refraction.

Hotspot

Select the true statement(s) below about what is happening in the picture

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Which pictures show refraction?

Hotspot

Select the true statement(s) below about what is happening in the picture