Reflect
What does it mean when light reflects?
It bounces back
What does it mean when light refracts?
It bends
What does it mean when light gets absorbed?
It gets taken in by a material.
What do you need to form at the beginning of a science experiment?
A testable question
Amado is making a model to show how light travels. In his model, he is using a tennis ball as the light source. He is using string to represent light. How should he use the string to model the way that light travels?
A. Tape the string so that it forms a tiny zigzag.
B. Pull the string tight so that it forms straight lines.
C. Form the string into an arc to show how light bends.
D. Wind the string around a pencil so that it forms a spiral.
B. Pull the string tight so that it forms straight lines.
Kaylyn has read that light can be reflected and absorbed. She holds a plastic plate in the light. She sees a spot of light on the ground near her. What conclusion can you draw?
A. The plate is absorbing all of the light.
B. The plate is reflecting the light into the air.
C. The plate is not reflecting or absorbing light.
D. The plate is reflecting the light onto the ground.
D. The plate is reflecting the light onto the ground.
When light changes direction, or bends, it is because it hits a different material. What material does light usually pass through?
a. air
b. water
c. clothes
d. glass
a. air
What is the absence of light behind an object the absorbs light called?
a shadow
Scientists tell one another about the results of their investigations so other scientists can check each scientist’s work. Which is a way that scientists can check another scientist’s work?
A. circle any words that are misspelled or should be replaced
B. check the charts or graphs to be sure there are no math mistakes
C. repeat the investigation exactly to see whether they get the same results
D. repeat the investigation, but change some things to see whether they get the same results
C. repeat the investigation exactly to see whether they get the same results
Which of the following is not an example of light energy?
A. the Sun
B. a lamp
C. a toaster
D. a hair dryer
D. a hair dryer
Chelsea pointed a flashlight straight ahead. The light from the flashlight suddenly traveled back to Chelsea. Which of the following objects did the light most likely strike?
A. brick wall
B. large mirror
C. clear glass window
D. a window with the shades closed
b. large mirror
Blake is standing in a pond looking at fish. From above the water, they look large. From under the water, they look smaller. What happens to light as it travels from the water to the air?
A. It stops.
B. It bends.
C. It reflects.
D. It is absorbed.
B. It bends.
Makari put a flashlight on a table so the light shined on a wall. He put a piece of cardboard in front of the flashlight and could no longer see the light on the wall. What most likely happened to the light when it reached the cardboard?
A. The cardboard absorbed it.
B. The cardboard destroyed it.
C. It was reflected onto the wall.
D. It was refracted outward in all directions.
A. The cardboard absorbed it.
What is an educated guess in science called?
a hypothesis
What direction does light travel?
Light travels in a straight line
What object perfectly bounces light back to its source?
A mirror
Miss Zolper does magic tricks with a glass of water and a picture of an arrow. When she passes the arrow behind the glass of water, the arrow changes direction. What property of light does this show?
a. light travels in a straight line forever
b. light gets brighter the farther it travels
c. light gets brighter when it reflects off smooth surfaces
d. light travels in a straight line until it strikes an object or substance
d. light travels in a straight line until it strikes an object or substance
Calvin and Elianna poured the same amount of water from the same sink into two identical glasses. Calvin and Elianna used a thermometer to determine that the water was the exact same temperature. Calvin wrapped his glass with black paper. Elianna wrapped her glass with white paper. Both students placed their glass under the same light. The temperatures after 20 minutes are shown below.
Drew's Cup | 86 degrees
Amy's Cup | 77 degrees
What might explain the differences in Drew’s and Amy’s temperatures?
A. Calvin’s water evaporated, and Elianna's did not.
B. Calvin used a darker color of paper than Elianna did.
C. Calvin’s starting temperature was different from Elianna’s.
D. Calvin’s water was placed under a light, and Elianna’s water was in the shade.
B. Calvin used a darker color of paper than Elianna did.
How does a scientist prove the conclusion of their experiment?
a. by stating why they are right
b. by providing data to support their conclusion
c. by telling other scientists
d. by yelling really loudly
b. by providing data to support their conclusion
When does light stop traveling in a straight line?
When it hits a different object, material, or substance
In order to see yourself in a mirror, what do you need beside the mirror?
Light
Why does a straw look like it is broken when you look at a glass from the side?
Because the light bends (or refracts) when it passes through water
Why do athletes put black marks under their eyes when they play sports in the Sun?
Are scientific hypothesizes always correct?
no!
What is an example of light energy?
Sun, lights, smart board, etc.