This lesson contains 16 slides, with interactive quizzes, text slides and 4 videos.
Lesson duration is: 45 min
Items in this lesson
space
Slide 1 - Slide
What were the other planets beside our 8/9 ones?
Slide 2 - Open question
Slide 3 - Video
Slide 4 - Slide
Slide 5 - Video
Black holes?
A place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space.
Slide 6 - Slide
Slide 7 - Video
Time travel could be possible with black holes
agree
disagree
Slide 8 - Poll
Wormholes?
Slide 9 - Slide
You go to space and your (imaginary) twin stays on Earth. If you come back after 50 years you will..
A
have the same age as your twin
B
be older than your twin
C
not survive
D
be younger than your twin
Slide 10 - Quiz
Twin paradox
A thought experiment..
Einstein
Slide 11 - Slide
Heavy planets create a big gravitational field
This field
slows down
time
Slide 12 - Slide
Slide 13 - Slide
What could be a good reason to think the earth is indeed flat?