Light, Seeing, and Shadows

Which is NOT a condition needed to see an object.

• eye

• light

• object

• magnifying glass

• clear line of sight or unblocked path for light to travel

Tags

NGSS.4-PS4-2

Which is NOT TRUE about light?

• It travels in straight lines.

• It travels in all directions from source until blocked.

• It travels continuously.

• It travels through all materials and objects.

Tags

NGSS.MS-PS4-2

The light source and object you are looking at can sometimes be the same thing.

• True

• False

The “spinning” circles and checkerboard phenomena were examples of

• optical illusions

• light sources

• models of how we see

Tags

NGSS.MS-LS1-8

Which of the following are examples is NOT a light source.

• Flashlight

• Battery

• Candle

• Television

To see an object light first travels in a straight line from the source to the object and then bounces off the object and travels to our eye.

• True

• False

Tags

NGSS.4-PS4-2

Multiple people could never use the same model.

• True

• False

As we learn more about the process of seeing, we are able to modify our models to include updated information.

• True

• False

Tags

NGSS.MS-LS1-8

Which is NOT true about models.

• Globes and maps are two different kinds of models of the earth.

• Scientists use models to help us understand phenomena.

• Each model has advantages and disadvantages.

• Models have to be colorful and very detailed.

Tags

NGSS.MS-LS1-2

The power is out at Kate’s house, so there are no lights. She wants to phone the power company to report the problem. First, she gets a flashlight.

Which model best represents how light behaves so that Kate is able to see her phone even though the screen is dark and why?

• Model 1 best shows light moving in straight lines.

• Model 1 best represents how light from the flashlight reaches her phone and bounces off the phone in all directions. Some of the light reaches her eyes.

• Model 2 best shows light moving in straight lines.

• Model 2 best represents how the light from the flashlight reaches her phone and bounces off the phone in all directions.

Tags

NGSS.MS-PS4-2