Space Time

Space Time

University

20 Qs

quiz-placeholder

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Space Time

Space Time

Assessment

Quiz

Physics

University

Hard

NGSS
HS-PS4-3, HS-PS3-2

Standards-aligned

Created by

Charles Martinez

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

There are two clocks one is stationary on the earth the other is traveling close to the speed of light around the earth. If we put the clocks back together after the second clock makes it back from its trip, the times are compared. What do you expect to occur?

More time elapsed on the stationary clock

More time elapsed on the traveling clock

No time has changed between them

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

We do not usually observe relativistic effects in our daily lives because 
we are moving at speeds much less than c. 
we are much larger than atoms. 
we are much heavier than elementary particles. 
we are much lighter than stars. 

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

If you travel at the speed of light a second can be observed to last forever.
True
False

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

One of the most startling consequences of time dilation is that a moving clock ______________ relative to a stationary observer.
Speeds up
Slows down

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The relativistic expression for length contraction of an object moving at velocity v is

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A particle with a lifetime of 2.0 × 10^–6 s moves through the laboratory with a speed of 0.9 c. Its lifetime, as measured by an observer in the laboratory, is
2.0 × 10^–6 s
3.2 × 10^–6 s
4.6 × 10^–6 s
5.4 × 10^–6 s
6.3 × 106–6 s

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to exactly fit within the tunnel.

What is the velocity of the train expressed in units of c?

0.333 c

0.50 c

0.60 c

0.80 c

0.866c

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