Light on the skin L1.8

Light on Skin L2.4

Objective: KWBAT explain the harmful effect of light on the skin.

Phenomenon: Australis has the highest rate of skin cancer in the world. Why?

Open Ended

Question: Why can light from the sun cause skin cancer but light from a light bulb cannot cause skin cancer?

CFS: Explains the difference between sunlight and light from a light bulb.

Explains what happens when light from the sun hits genetic material.

Explains what happens when light from a light bulb hits genetic material.

TALK ABOUT ALL OF THE ABOVE POINTS TO RECEIVE CREDIT.

Light from the sun and light from a light bulb are different. Light from the sun has ultraviolet light in it and light from a light bulb does not. Genetic material absorbs ultraviolet light and this causes damage to the genetic material. Light from a light bulb is not absorbed by the genetic material and therefore cannot make a change to the genetic material.

Multiple Choice

Oscar uses some glue to fix a broken plate. He puts the glue under a desk lamp but the glue doesn’t dry. Then he puts the glue out in the sun and it dries. Why does light from the sun dry the glue when light from the desk lamp does not?

• Because the glue can take in energy from the light from the sun but not from the light from the lamp.

• Because light from the sun pulls energy out of the glue and light from the desk lamp does not

• Because the sun gives off a type of light that carries energy, and light from the desk lamp does not

• Because light from the sun carries heat molecules, and light from the desk lamp does not.

Multiple Choice

How could you tell when energy was absorbed?

• you could not tell

• you could tell because the light changed direction

• you could tell because the object changed

• you could tell because the energy that went in is not the same energy that went out.

Multiple Choice

Based on the simulation, which type of light is most likely to cause skin cancer?

• microwave

• visible light

• ultraviolet

• x-ray

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Multiple Choice

UV light is ____ by genetic material

• absorbed

• reflected

• refracted

• detected

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Multiple Choice

TRUE or FALSE: Light energy can bake a cake.

• TRUE

• FALSE

Multiple Choice

Mr. De La Cerda uses a laser to point at stars in the night sky. What type of energy do you see?

• Light

• Electrical

• Thermal

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Multiple Choice

Which object uses light energy as a source of energy to work?

Multiple Choice

Solar panels NEED ______ energy in order to produce electricity.

• Thermal

• Light

• Mechanical

Multiple Choice

An example of reflection

Multiple Choice

opaque means

• no light gets through

• some light gets through

• all light gets through

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Multiple Choice

In science terms, light means...

• something that cannot be heard in space

• a diet pop

• an idea

• a form of energy that can move through space

Multiple Choice

translucent means

• no light can pass through

• some light can pass through

• all light can pass through

Multiple Choice

transparent means

• light cannot pass through it

• all light can pass through it

• some light can pass through it

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Multiple Select

Which three words describe how light can or cannot pass through matter?

• prism

• opaque

• reflection

• transparent

• translucent

Multiple Choice

What scientific tool is the girl holding?

• thermometer

• microscope

• prism

• spring

Multiple Choice

What principle of light is demonstrated here when light moves from air to water?

• reflection

• refraction

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Multiple Choice

Which line demonstrates how light travels?

• A

• B

• C

• D

Multiple Choice

Darker colors absorb more light, which is changed into heat and causes an increase in temperature. Lighter colors reflect more light, so they stay cooler. Which of the following roofs would be the warmest on a hot summer day?

• black roof

• beige roof

• grey roof

• white roof

Multiple Choice

Jace wants to make a shadow on the wall in front of him. Which is the best way for Jace to make the shadow?

• Jace should put a lamp in front of him.

• Jace should stand near an open window.

• Jace should stand between the wall and a lamp.

• Jace should turn off all of the lights in the room.

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ANSWER THE LAST EIGHT QUESTIONS ON YOUR OWN!!!

Multiple Choice

A student shines a flashlight through a piece of glass. The light from the flashlight hits Points A, B, and C instead of going in a straight line. Which word describes this spreading of light by the glass?

• blocking

• absorbing

• reflection

• refraction

Multiple Choice

Which of the pictures shows what Addia would MOST likely see if she looked at the beaker from the side?

• Picture A

• Picture B

• Picture C

• Picture D

Multiple Choice

A beam of light is shined directly at a mirror. Which statement tells what happens to the light when it hits the mirror?

• It will continue in a straight line

• It will bend

• It will reflect

• It will disappear

Multiple Choice

Kevin is doing an investigation. He collects the materials in the image. After gathering the materials, Kevin follows these steps.

1. Dim the room lights
2. Shine a laser light pointer at each object
3. Record what happens with the laser light on each object

What topic is Kevin MOST likely studying with this experiment?

• Light can be reflected, refracted (bent) and absorbed

• Light creates heat

• Energy comes in different forms such as light, heat and sound

• Light energy can cause motion or create change.

Multiple Choice

Which of the following produces light energy?

• a mirror

• a campfire

• a book

• a horse

Multiple Choice

Which of the following sentences uses the word light, the way a scientist would use the word light when referring to ENERGY?

• Gabby has a smile that can light up any room.

• Barbie has light blonde hair.

• Jay studied in light of his science test this week.

• The students observed the light being refracted in the prism.

Multiple Choice

Which is NOT a way a person would use the word reflect when describing light ENERGY?

• Tamatoa's shiny shell reflects more than dull objects.

• Reflect on your decision to make good choices.

• A cell phone can reflect our image back to us if the screen is blank.

• The light will reflect in different directions.

Multiple Choice

Which word describes how light travels when it passes from air, to water?

• straight

• curved

• circular

• bent

Multiple Choice

Which would reflect light rather than bend it?

• magnifying glass

• crystal

• prism

• mirror

Multiple Choice

Why are you able to see yourself when you look in the mirror?

• The mirror reflects the light.

• Light bends as it hits the mirror.

• Light travels through the mirror.

• The mirror absorbs the light.