470799
Question 1
Question
What is the kinetic energy of an 8 kg bird flying at 9 meters per second?
Answer
-
324 J
-
72 J
-
36 J
-
291 J
Question 2
Question
The mechanical energy (ME)=2500. At point B, the PE= _____________ and KE=______________.
Image:
ENERGY.PNG (image/PNG)
Answer
-
2500 J, 2500 J
-
2000 J, 500 J
-
1000 J, 1500 J
-
1250 J, 1250 J
Question 3
Question
The mechanical energy (ME)=2500. At point A, the PE= _____________ and KE=______________. (*Point A is not on the ground, but near the ground.*)
Image:
ENERGY.PNG (image/PNG)
Answer
-
2500 J, 0 J
-
0 J, 2500 J
-
0 J, 0 J
-
1250 J, 1250 J
Question 4
Question
The mechanical energy (ME)=2500. At point C, the PE= _____________ and KE=______________.
Image:
ENERGY.PNG (image/PNG)
Answer
-
0 J, 2500 J
-
2500 J, 0 J
-
2490 J, 10 J
-
10 J, 2490 J
Question 5
Question
Paul pushes a box a distance 20 meters with 48 newtons. How much work is done?
Answer
-
1009 J
-
523 J
-
960 J
-
689 J
Question 6
Question
______________ is found in the mantle and moves plates.
Answer
-
Convection
-
Radiation
-
Conduction
Question 7
Question
_______________ is used when a metal spoon is in hot tea.
Answer
-
Conduction
-
Radiation
-
Convection
Question 8
Question
_______________ is responsible for light coming from a bonfire.
Answer
-
Convection
-
Radiation
-
Conduction
Question 9
Question
Visible light waves are shorter than microwaves.
Answer
- True
- False
Question 10
Question
Gamma rays are higher frequency than Infared but are less dangerous.
Answer
- True
- False
Question 11
Question
Which of these is the order for the electromagnetic spectrum? *Abbreviation (Ex: R=Radio waves)*
Answer
-
R-M-U-V-U-I-G
-
R-I-M-V-U-X-G
-
R-M-I-V-X-U-G
-
R-M-I-V-U-X-G
Question 12
Question
How does the Doppler Effect help explain the Big Bang Theory?
Answer
-
Big Bang Theory says the universe is expanding. All light seen from earth is blue shift and has longer wave lengths meaning that the object sending the light is moving away from us.
-
Big Bang Theory says the universe is shrinking. All light seen from earth is blue shift and has longer wave lengths meaning that the object sending the light is moving away from us.
-
Big Bang Theory says the universe is shrinking. All light seen from earth is red shift and has longer wave lengths meaning that the object sending the light is moving away from us.
-
Big Bang Theory says the universe is expanding. All light seen from earth is red shift and has longer wave lengths meaning that the object sending the light is moving away from us.
Question 13
Question
An electromagnet is a magnet created when a circuit is closed, connecting a battery a wire and rapping it around an insulator.
Image:
electromagnetic (image/jpg)
Answer
- True
- False
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