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WorksheetsSCAPHOTON
Total questions: 10
Worksheet time: 5mins
The laws of physics tell us that energy is:
Conserved
Constant
Contained
Concerned
Which of these phenomena inspired Albert Einstein in his development of general relativity?
Seeing an apple drop from tree
Watching two trains move in opposite directions
Seeing a man fall off a roof
The vibration of strings on a violin
When you map out the universe from the smallest scale (the Planck length, which is 1.6×10−35 metres) to the largest (the observable universe, which is 91 billion light years across), what do you find approximately in the middle?
electrons, protons, etc,...
cells, molecules like DNA, etc,..
Humans
planets like earth
solar system
Which of the following is not a form of energy?
Light
Heat
Friction
Sound
Electricity
On a cosmological scale, the concept of “distance” is actually pretty tricky to define. Why’s that?
The universe is expanding and the rate of expansion has changed over time
The Heisenberg Uncertainty Principle says that we can’t know exactly where anything is
Supermassive black holes in galaxies are eating matter too quickly
We simply don't have the technology to measure such a long distance
If energy cannot be created or destroyed, why do stars shine?
Stars are the only exception to the law of conservation of energy
This is an active area of research in astrophysics, and answers should be coming soon
Nuclear fusion transforms mass into energy
Stars burns highly combustible hydrogen gas just like logs on a fire
When a cricket bat hits a ball, which one of the following is true?
the force exerted by the bat is greater than the force exerted by the ball.
the force exerted by the ball is greater than the force exerted by the bat.
the force of the ball on the bat and the force of the bat on the ball are equal.
none of the above
The work done by a friction force is
always positive
always negative
always zero
either positive or negative depending upon the situation.
Who first discovered the photoelectric effect?
J.J.Thompson
Albert Einstein
Wilhelm Hallwachs
Heinrich Hertz
Analyse the following sentences,
A) Winds have shadows
B) Sound is visible
A is true and B is false
B is true and A is false
Both are true
Both are false
