Gravity and Space Exploration

Gravity!!

Let's review what we know and learn some new vocabulary!

Vocabulary

Vocabulary

Here are some vocab terms you have or will see on the Gizmo activity- Gravity Pitch

Gravity

The force of attraction between all objects in the universe

Gravity

Gravity is only significant when one of the objects is very large, like the Earth. There is very, very little gravitational attraction between you and your couch – but there is some! 

Gravity increases as mass & size increases

Poll

As the mass of the objects DECREASES, gravity will...

• increase

• decrease

• stay the same

Multiple Choice

If the distance between object DECREASES and gets closer together, the force of gravity...

• increase

• decrease

• stay the same

Multiple Choice

Any object with mass has gravity.

• True

• Sometimes

• False

• Never

Multiple Choice

Which model has greater gravitational attraction.

• model A

• model B

• both models have equal gravity

Multiple Choice

What keeps the planets in orbit around the sun?

• gravity

• friction

• magic

• distance

​A Nebula: a cloud of gas and dust in outer space. Nebulas are sometimes called star factories. The Gravity of the pieces of dust and gas attract each other and they make bigger pieces forming stars and planets.

​We can actually see planets being formed in space through a very big telescope!

​These are pictures of stars that have died, when they die they often form a white dwarf, a neutron star or a black hole.

​This is the first direct picture of a black hole! Remember it is very very far a

​Galaxy Formation

​Andromeda galaxy contains a trillion stars.

​Astronomers estimate there are about 100 thousand million stars in the Milky Way alone.

​IC 1101 contains 100 trillion stars