we know that force is a push or pull. but can it go up and ...€¦ · grade 3 science and...

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

Force of Gravity-The force that pulls all things towards the earth.

We know that force is a push or pull.But can it go up and down?

What is holding or pulling you to the ground?

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

What is gravity?What causes you to slide down a hill?

Gravity-Pulls you downwards the ground where you are supported.

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

We know that gravity pulls you to the ground, but what else does it pull on?

Gravity pulls on everything that has a mass (weight).

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

What is gravity?http://www.youtube.com/watch?v=4ij5OgJatgc&feature=related (5 minutes)

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

How do you overcome or beat gravity?

By using more force to push against the force of gravity that is pulling on you.

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

Overcoming Gravity?http://www.youtube.com/watch?v=MlNf3J42mBU (2 minutes)

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

Overcoming Gravity?http://www.youtube.com/watch?v=lTn0YZU4S0U

Grade 3 Science and technology-Activity 6: Forces causing movement- Force of Gravity created by minh.quach@tdsb.on.ca

Force of gravity reviewAll things are pulled to earth because of the force of gravity. You can overcome it, by pushing more force against the force of gravity.