SFB 674-675-676

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Science IV Term...

Date: May 6th, 2024
Session: 102
Purpose: Unit 14: General Review on Light.

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Science Unit 14 Quizizz Lesson 1

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Science Unit 14

Review of Topics - Quizizz Lesson

Open your SFB pg. 674

Fill in the Blanks

Use what you’ve learned about light to complete the following.

​1.

is a form of energy that travels in waves.

Multiple Choice

Use what you’ve learned about light to complete the following.

As 2. __________ move forward, energy moves perpendicular to the forward motion.

• Longitudinal light waves

• Transversal sound waves

• Transversal Sound waves

• Transversal light waves

Fill in the Blanks

Use what you’ve learned about light to complete the following.

Infrared waves, ultraviolet waves, microwaves, radio waves, X-rays, and visible light are organized by wavelength and frequency in the 3.

.

Fill in the Blanks

Use what you’ve learned about light to complete the following.

The power of 4.

comes from the fact that they contain a single wavelength of light focused in just one direction.​

Multiple Select

Choose three new things that you learned about light..

• Three new things about light are that it can be described as a wave or a particle,

• it travels at a speed of approximately 299,792 kilometers per second in a vacuum

• Light is purple in color
• it can be refracted, reflected, or absorbed.

• Light can be heard

Open your SFB pg. 675

Fill in the Blanks

Across​

​1. A form of electromagnetic energy, some of which is visible

Fill in the Blanks

Across​

​1. A form of electromagnetic energy, some of which is visible

Fill in the Blanks

Across​

4. A dark area where light is blocked by an object

Fill in the Blanks

7. The direction energy is carried as a light wave moves forward

Fill in the Blanks

Across​

8. The range of electromagnetic waves from radio waves to X-rays

Fill in the Blanks

Down​

​1. A beam of light of a single wavelength focused in a single direction

Fill in the Blanks

Down​

2. A type of wave that forms an S shape

Fill in the Blanks

Down​

3. A type of wave that comes from the sun and may harm human skin

Fill in the Blanks

Down​

5. The type of light that helps humans see the world

Fill in the Blanks

Down​

6. A type of wave that is used in “night vision” equipment

Open your SFB pg. 676

Multiple Choice

Explain how light travels. Include as many details as you can.​

• Light travels in the form of solid waves at a speed of 500 km/s.
• Light travels in the form of sound waves at a speed of 100 km/s.
• Light travels in the form of electromagnetic waves at a speed of approximately 299,792 kilometers per second.
• Light travels in the form of water waves at a speed of 50 km/s.

Multiple Choice

Describe the part of the electromagnetic spectrum that people can see.

• Ultraviolet light
• Visible light
• Infrared light
• X-rays

Multiple Select

Name three devices that use electromagnetic waves that people can’t see.​

• 1. Wi-Fi Router

• 1. Electric Heater

• 1. Microwave Oven

• 1. Alarm Clock

• 1. Cell Phones

Multiple Choice

Circle the light that would be best for pointing out details on a map hanging high on a wall.

• Laser Pointer

• Torch/Flashlight

• projection lamp

Multiple Choice

Which light would be best for pointing out details on a map hanging high on a wall. Why?

• 1. Projection Lamp: It covers a large area with consistent brightness, ideal for illuminating the entire map.

• 1. Torch: Its narrow beam may result in uneven lighting on the map.

• 1. Laser: Its narrow beam and potential eye hazards make it less suitable for map illumination.

Multiple Choice

Explain why light produced by the sun reaches Earth, but sound produced by the sun does not.​

• Sound is absorbed by the atmosphere before it can reach Earth.
• Sound waves are too slow to travel from the sun to Earth.
• Light is reflected off the sun and directed towards Earth, while sound is not.
• Light is an electromagnetic wave that can travel through the vacuum of space, while sound is a mechanical wave that requires a medium to propagate, such as air.

Poll

Any questions?

• YES

• NO

• QUESTIONS ON WHAT?

• DID WE FINISH?