Light travels in a ________________ line.
Straight
What we need to back up a claim.
Evidence
Noticing things by using our senses (touch, sight, hearing, taste, and smell)
Observation
A part of the body that detects light and allows us to see objects.
Eye
What are the two things wrong with this shadow?
Wrong direction and wrong position
True or False? We don't see an object, we see LIGHT bouncing off of an object.
True
Nothing in the way.
Direct Path
A material that can be seen and touched.
Object
The way light travels from a light source to an object.
Light Path
True or False? Squares A and B are the same color.
True
Do our pupils get bigger or smaller when light shines in our eyes?
Smaller
Images that can trick our brain
Optical Illusions
Where light comes from.
Light Source
the dark shape that is created when an object blocks the light rays from a light source.
Shadow
Why can't the girl see the car?
The is not a direct path between her and the car. The light that is bouncing off of the car cannot reach her eyes.
True or False? All animals have the same types of eyes.
False
A number and a unit that define a quantity. Example: lux is the ____ for the brightness of light.
Measurement
A representation of something. In science we often model phenomena.
Model
A stream of light.
Ray
When we look at a book in the sunlight, what must happen to the light for our eyes to see the book?
The light must ___ the book and then ___ off and go into our eyes.
hit bounce
What are the four components we need in order to be able to see?
1) Eye
2) Object
3) Light
4) Direct Path
An observable event
Phenomenon
A device that measures input from the environment. Example: a light ___ measures the brightness of light.
Sensor
To look at all the evidence and come up with an idea about it.
Evaluate
Draw a person holding a flashlight and a tree. Show how the light from the flashlight lets the person see the tree.