Time Dilation

Which of the following is true about time when an object approaches the speed of light?

• Time slows down

• Time speeds up

• Time stays the same

• Time will stop

Mark and James are both 16 years old. James became an explorer astronaut and travelled at light speed.

According to time dilation, which of the two will be younger after 7 years?

• Mark

• James

• Both boys will be of the same age

• Both boys will be 7 years old.

What happens to time when an object travels at the speed of light?

• Time stops

• Time slows down

• Time speeds up

• Time stays the same

A difference in time intervals measured by observers moving at different speeds relative to each other.

• thought experiments

• relativity of simultaneity

• time dilation

• length contraction

Which of the following phenomena is best explained by the concept of time dilation?

• The bending of light around massive objects

• The slowing down of clocks in a fast-moving spaceship

• The increase in mass of an object as it speeds up

• The expansion of the universe

According to Einstein's theory of relativity, what happens to time as an object approaches the speed of light?

• Time speeds up

• Time remains constant

• Time slows down

• Time reverses

If a twin travels to space at a speed close to the speed of light and returns, what will be observed?

• The twin who traveled will be older

• The twin who stayed on Earth will be older

• Both twins will be the same age

• Time will have stopped for the traveling twin

Which equation represents the relationship between time dilation and velocity in special relativity?

In the context of time dilation, what is the 'twin paradox'?

• A thought experiment where one twin ages slower than the other due to high-speed travel

• A paradox where twins communicate faster than light

• A situation where twins experience different gravitational forces

• A scenario where twins are in different time zones

What is the primary cause of time dilation according to the theory of relativity?

• Gravitational fields

• High velocities

• Magnetic fields

• Electric fields