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Energy Practice Questions 8th
Test Description: Energy and Energy Transformations
Instructions: Answer all questions to get your test result.
1) Which of the following describes an apparent shift in the frequency of light emitted by a light source that is moving toward or away from an observer?
A
Doppler Effect
B
Law of Energy
C
Radiant Effects
2) Which of the following is a practically a part of the electromagnetic spectrum?
A
Stethoscope
B
X-Ray
C
Seismograph
3) What happens when a waves frequency decreases?
A
Wavelength remains the same
B
Wavelength blows up
C
Wavelength decreases
D
Wavelength increases
4) Which property of a sound wave changes when the speed of the vibration increases?
A
Amplitude
B
Decibels
C
Frequency
5) In which of the following situations will sound waves echo?
A
Bobby yells down the hall, the sound is absorbed by the walls.
B
Bobby yells down the hall, the sound reflects off the hall walls and travels back to him
C
Bobby yells in the sky, the sound reflects off the clouds and travels back to him
D
Bobby yells in the sky, the sound absorbs into the clouds.
6) A student claims that electrical energy is being transformed to thermal energy. Which of the following statements best supports the students claim?
A
Particles in the burner vibrate more causing the burner to change from black to red
B
Stove is plugged into an outlet and if a pan with ice is placed on the stove, the ice will melt
7) While listening to your favorite song, you get an Emergency Alert on your phone with a very high frequency, what would happen to the wave that it would produce?
A
Less waves are being produced
B
More waves are being produced
8) What happens when light shines on a car and you see the car as being red?
A
Red light is being diffracted from the car to your eyes.
B
Red light is being reflected off the car to your eyes
C
White light is being diffracted from the car to your eyes
D
White light is being reflected from the car to your eyes.
9) Which of the following is true?
A
As frequency goes up, Energy goes up, wavelength goes down
B
As frequency goes up, energy goes up, wavelength goes down
C
As frequency goes down, Energy goes down, wavelength down
10) When light changes speed and bends as it goes through another medium is called?
A
Reflection
B
Refraction
11) An echo is an example of:
A
Reflection
B
Refraction
12) Sound travels fastest through
A
Solids
B
Gases
C
Liquids
13) Which color has the highest frequency?
A
Violet
B
Red
C
Blue
14) When white light is shined through a prism it produces a rainbow. This is a form of _____________.
A
Refraction
B
Reflection
*select an answer for all questions
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