Show:
Vokabulär
Massa Vs vikt
Strength of Gravity
Fritt fall
Gravitation
100

Detta är den attraktionskraft som verkar mellan alla objekt i universum.

Vad är gravitation?

100
This changes depending on what planet you are on.
What is weight.
100
These objects in the universe have gravity.
What is everything?
100
Why do objects lose speed after falling for so long?
What is air resistance.
100
Since molecules of air are so small, do they have gravity?
Yes! Everything has gravity!
200
This is the feeling you get on rollercoasters when you feel weightless.
What is free fall?
200
This stays the same no matter where you are in the universe.
What is mass.
200
Why does the Earth have more gravity than our moon?
Because the Earth has more mass. More mass = more gravity.
200
If we were to suck all of the air off of the planet and drop a penny off a building, could the penny be dangerous?
Yes; the penny will increase in velocity every second and since there is no air resistance it will hit the ground travelling very fast.
200
Gravity and magnetism act the same way. Are gravity and magnetism the same thing? Explain.
No - gravity and magnets are two completely different forces. However, magnets ACT similar to gravity so they make for a good example when teaching gravity.
300

This is how much space an object takes up.

What is volume.

300

Om jag väger 45 kg på jorden och reser till månen och väger 8 kg, förändrades min massa då? Förklara.

Nej. Massan förändras aldrig; vikten beror på en planets gravitation.

300
Would you have more mass on the Earth or floating in space?
Your mass is the same anywhere you are in the universe.
300
How do skydivers take advantage of air resistance to ensure they land safely?
They deploy a parachute.
300
What two properties determine the strength of gravity?
1) Mass of an object 2) Distance between objects
400
This is how we measure the amount of gravity someone/something has on different planets.
What is weight?
400
What would happen if you stood on a planet that was 500x the mass of the Earth?
Your body would crush under the immense gravity.
400
How does gravity affect light?
Gravity bends photons of light.
400
If you are travelling up an elevator very fast against gravity, will you feel lighter, heavier, or the same?
You will feel heavier because you are going against gravity.
400
If Earth is 93 million miles away from the sun and Neptune is 2.8 billion miles away from the sun, which planet is less attracted to the sun and why?
What is the Earth because it is significantly closer. The closer the objects are, the more attracted they are to each other.
500

This is how much "stuff" something is made out of.

What is mass?

500
How might your mass change over time?
When you grow, your mass increases because your body takes up more space.
500
If you drop a penny off of a skyscraper, why can the penny only travel 65mph?
Because of air resistance.
500
From our Disney video about gravity, how did they make the Tower of Terror make guests feel like they are weightless?
By pulling the elevator down faster than the 1g force of gravity.
500
If people have gravity too, why does everything on our planet not clump into one big ball?
Because Earth's mass and gravity are so immense that it yanks everything down towards the center of the Earth similar to a super magnet.