Lesson 1: Forms of Energy
Lesson 2: Heating Matter
Lesson 3: Traveling Light
Lesson 4: Electricity
How Light Travels Through the Eye
100
Anything that can do work has _______________.
What is "energy".
100
Food, fuel and batteries go through ___________.
What is "chemical changes".
100
Rays of light travel in ____________ lines. a. crooked b. zigzag c. straight d. wavy
What is "straight". (c)
100
Tiny amounts of electricity are called electric ____________.
What is "charges".
100
First, light passes through the _________ where it ___________.
What is "cornea" and "bends"
200
Which of these has energy of motion? a. nonmoving things b. electricity c. light d. moving things
What is "moving things". (d)
200
The item that is NOT a good conductor is a ___________. a. wooden box b. iron pan c. aluminum skillet d. metal spoon
What is a "wooden box". (a)
200
Electric energy produces heat in a ___________. a. gas stove b. coal furnace c. hair dryer d. bonfire
What is a "hair dryer". (c)
200
The flow of electricity from place to place is an electric ______________.
What is "current".
200
Second, light passes through the ____________.
What is "pupil"
300
Temperature is measured by a tool called a ____________.
What is a "thermometer".
300
This means "to bounce back".
What is "reflects".
300
The path along which electric current moves.
What is an "electric circuit".
300
Third, light travels to the __________ where it refracts (inverts) onto the ________ of the ________.
What is "lens", "back", and "eye".
400
When light rays pass through a lens, they ____________.
What is "bend".
400
When you touch electric switches and appliances, your hands should be _________ a. dry b. wet c. covered d. clean
What is "dry".
400
After light passes the lens to the back of the eye, it is sent to the ________________.
What is the "nerve to the brain".
500
This is why a balloon sticks to a wall after being rubbed on a wool sweater.
(answer)
500
Finally, your brain _________________.
What is "tells you what you see".
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