Energy Transfer and Communication
How do cell phones receive decoded information over long distances?
A) They receive digitized information and change it to voice.
B) They receive voice and change it to digitized information.
C) They receive digitized information and change it to Morse code.
D) They receive Morse code and change it to digitized information.
A) They receive digitized information and change it to voice.
Do collisions transfer energy? Why or why not?
Yes, energy is transferred from one object to another.
What statement describes a wave?
A) Water moves up and down when it is disturbed.
B) Water moves in a circle when it goes down a drain.
C) Water moves through a pipe when a faucet is turned on.
D) Water moves out of a bucket when the bucket is overfilled.
A) Water moves up and down when it is disturbed.
What numbers are used in binary code?
0 and 1
Which phrase describes evidence that energy, in the form of heat, has been transferred?
A) Wind blows and a windmill turns.
B) Burnt toast comes out of a toaster.
C) A radio is turned on and music is heard.
D) A lamp is turned on and light can be seen.
B) Burnt toast comes out of a toaster.
Heidi and Jim roll a pool ball toward a second pool ball that is not moving. Describe two signs that energy is transferred in the collision.
What do short wave lengths look like?
Does Morse code uses coded or uncoded communication?
Coded
Write one letter in each blank to correctly complete the sentences. When Tamika pulls back on a string to shoot the arrow, energy is being _. When she lets go of the string, potential energy will be transformed into _ energy.
A) electrical
B) motion
C) released
D) stored
D, B
What happens to a bowling ball when it collides with the pins?
It loses some of its energy.
What do long wavelengths look like?
Waves that are spread out.
Why are codes a useful way to relay messages?
They can be decoded digitally and sent by waves
Engineers have improved cell phones. Fill in the blank to correctly explain how phones can take and send clearer photos. The camera on the phone takes photos with _____ pixels. The phone sends the information. Decoding the information is slower for clear photos than for fuzzy photos. Engineers improved this problem by making computers faster.
A) more B) fewer C) no
A roller coaster moves to the top of a hill where it stops. What happens to the energy when the coaster stops?
The energy is stored energy.
Fill a bathtub with water, and gently place a plastic toy on the surface. What will happen to the toy when waves are made?
The toy will go up and down not side to side.
A student sends the text message “Hi.” The cell phone turns the message into binary code. How are the H and the I different in binary code?
A. Each letter is coded as a different pattern of 1s and 0s.
B. One letter is coded as a 1, and the other is coded as a 0.
C. Each letter is coded as the number that matches its place in the alphabet.
D. One letter is coded as a dark pixel, and the other letter is coded as a light pixel.
A. Each letter is coded as a different pattern of 1s and 0s.
Describe how the wave of a drum would change if it were hit harder compared to being hit softer.
The sound would be louder causing the amplitude to be larger.
You and a friend are sitting on the ground a few meters apart. You each have a basketball that you roll towards each other. The ball that your friend rolls is moving faster. What happens next?
If they hit each other, your basketball will move in a different direction.
Explain how waves in water differ from sound waves.
Water waves are disturbances and sound waves are vibrations.
How do cell phones receive decoded information over long distances?
A. They receive digitized information and change it to voice.
B. They receive voice and change it to digitized information.
C. They receive digitized information and change it to Morse code.
D. They receive Morse code and change it to digitized information
A. They receive digitized information and change it to voice.