We Only See The Past

We Only See The Past

Assessment

Interactive Video

Physics, Science

11th Grade - University

Hard

Created by

Quizizz Content

FREE Resource

The video explains how sound and light travel at different speeds, causing delays in perception. It uses examples like a hammer hitting a pole and lightning to illustrate sound travel. The moon's distance is discussed, showing how light takes time to reach Earth, making us see the moon as it was 1.3 seconds ago. The video also covers galaxies seen by the James Webb Space Telescope, which are billions of light years away, meaning we see them as they were billions of years ago. Finally, it highlights that everything we see is in the past, even objects close to us, due to the time light takes to travel.

Read more

5 questions

Show all answers

1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the approximate speed of sound through air at a given temperature?

Evaluate responses using AI:

OFF

2.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain why we see lightning before we hear thunder.

Evaluate responses using AI:

OFF

3.

OPEN ENDED QUESTION

3 mins • 1 pt

How long does it take for light from the moon to reach the Earth?

Evaluate responses using AI:

OFF

4.

OPEN ENDED QUESTION

3 mins • 1 pt

What does it mean when we say we are looking at the past when observing celestial objects?

Evaluate responses using AI:

OFF

5.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the significance of the distance of galaxies in relation to the time it takes for their light to reach us?

Evaluate responses using AI:

OFF