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Special Relativity Flashcards | StudBud
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Special Relativity
Special Relativity
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year 12 physics, nature of light
Flashcards
20 cards
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Questions
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Answers
1
If you are moving past the earth at high speed you would notice
you can get more done in an hour
your pulse has slowed down
none of the above
All your clocks have slowed down.
2
a light clock is moving past us at very high speed. What will we see?
It is not ticking.
It is "ticking" faster than ours
It is "ticking" slower than ours
It is ticking the same as ours
3
When we move around through space just a little bit, we are moving
mostly through space and only a little bit through time
only through space
mostly through time and only a little bit through space
through time only
4
Compared to earth time, there is a physical slowing of time when you travel at..
every day speeds
relativistic speeds
None of the above
both A and B
5
Light is different to particles because no matter how fast it is moving it always
has the same colour
travels in the same direction
has the same speed
has the same period
6
Einstein stated that the laws of physics are
common sense applied to microscopic and macroscopic things
different depending on the situation
the same in all frames of reference
the same in all uniformly moving frames of reference
7
A proton is travelling at 0.9999999c. It will seem to have
smaller mass than a stationary proton
smaller momentum than a stationary proton
the same momentum as a stationary proton
greater mass than a stationary proton
8
Find velocity of ball thrown at you at 6Okph from truck moving towards you at 20kph
60 kph
80 kph
40 kph
100 kph
9
To an observer at rest, anobject traveling at very high speeds appears to be
shrunken uniformly
shorter in the direction perpendicular to travel
shorter in the direction of travel
longer in all directions
10
What is this?
the biggest atom smasher in the world
The LHC
the largest linear accelerator in the world
the large hadron collider
11
According to special relativity, all laws of nature are the same in reference frames that..
vibrate
accelerate
move at constant velocities
go in straight lines
12
When we speak of time dilation, we mean that time
compresses with speed
is related to space
stretches with speed
is a constant at all speeds
13
Bob travels past Big Ben at 0.6c. If he sees 1 sec pass on Big Ben what time will he measure?
1.25 seconds
1 second
2 seconds
2.5 seconds
14
Einstein reasoned that
there is no unique spot to measure velocity from.
All of the above
an object can only measure v relative to other objects
all motion is relative
15
How long would a 20m ship look if it was passing you at 0.6c?
16 meters
13 meters
10 meters
20 meters
16
John moves away from Jill at 0.5c. Jill flashes a light towards John. John will see the light
moving towards him at 1.5c
move toward him at 0.66c
move toward him at 0.5c
move towards him at c
17
When you approach a light source, the wavelength of the light appears
longer
the same
shorter
18
If you travel at speeds close to speed of light, compared with your friends on earth, you are
younger
older
longer
no younger nor no older
19
What Einstein discovered about space and time is that they
are parts of one whole
are separate entities
follow an inverse-square law
are special to space travelers
20
Einstein’s second postulate tells us that the speed of light
changes depending on the time of day
is a constant in all frames of reference
slows in a transparent medium
depends on one’s frame of reference
