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Relativity
Relativity
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Answers
1
How long would your 20 metre long spaceship look if you were travelling at 0.6c?
10 m
16 m
20 m
13 m
2
Einstein stated that the laws of physics are
the same in all frames of reference
common sense applied to microscopic things
the same in all uniformly moving frames of reference
different depending on the situation
3
If you are moving in a high speed spaceship relative to the Earth, you would
notice all your clocks have slowed down
none of the above
notice your pulse slowing down
be able to do much more in an hour than before
4
How many seconds pass on Earth for every second that passes while you are in a spaceship travelling at 0.6c?
2 s
2.5 s
1 s
1.25 s
5
To an observer at rest, an object travelling at very high speeds appears to be
shorter in the direction perpendicular to travel
shrunken uniformly
longer in all directions
shorter in the direction of travel
6
Question on picture:
fast
just the same
slow
7
Einstein reasoned that
all of these are true
all motion is relative
there is no unique spot relative to which all motion can be measured
a spaceship can only measure its speed relative to other objects
8
Question on picture:
80 km/hr
60 km/hr
40 km/hr
100 km/hr
9
If you travel at speeds close to speed of light, compared with your friends on earth, you are
younger
the same
older
longer
10
What Einstein discovered about space and time is that they
are special to space travellers
are separate entities
are parts of the same thing
follow an inverse-square law
11
Compared to earth time, there is a physical slowing of time when you travel at
both of the above
everyday low speeds
relativistic speeds
none of the above
12
Light is difference from objects with mass in that no matter how fast the source of light is moving, light always
has the same colour
has the same period
has the same speed
travels in the same direction
13
Question on picture:
c
1/2c
3/2c
2/3c
14
Einstein’s second postulate tells us that the speed of light
slows in a transparent medium
is a constant in all frames of reference
changes depending on the time of day
depends on one’s frame of reference
15
When we speak of time dilation, we mean that time
compresses with speed
stretches with speed
is related to space
is a constant at all speeds
16
According to the special theory of relativity, all laws of nature are the same in reference frames that
vibrate
accelerate
oscillate
move at constant speeds
