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Phet: Gravity Performance Task

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Last updated about 5 years ago
16 questions

Phet: Gravity Performance Task

3
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Part 1-

Directions:
1. Play with all of the arrows and click and drag the spheres until you feel comfortable with how to change the mass and position of the spheres.
2. When you are ready click the refresh button and the bottom right of the screen.
3. Make sure the “decimal notation” box is checked before you begin.
4. Set both spheres to the following masses (see table below) and as close to each other as they can possibly be?
1
Question 1
1.

Type the force below (it will have a lot of zeros).

1
Question 2
2.

Type the force below (it will have a lot of zeros).

1
1
1
1
2
Question 7
7.

Using the diagram to the left, explain whether the forces above in your data table are big or small numbers?

Question 8
8.

Claim: Gravity is a very weak force that is affected by mass.

Use evidence from the data table, question 7 above, and scientific reasoning to support the claim.

Part 2 -

Directions:
1. Set both spheres to a mass of 200 kg
2. Place the blue sphere at 0 meters while the red sphere is set at the following distances
1
Question 9
9.

What is the force when there is 0 meters between the spheres? (the number will have a lot of 0s)

1
Question 10
10.

What is the force when there is 2 meters between the spheres? (the number will have a lot of 0s)

1
1
1
1
Question 15
15.

What happens to gravitational force when the distance between the spheres increases?

Question 16
16.

Claim: Gravity is a very weak force that is affected by distance.

Use evidence from the data table, question 15 above, and scientific reasoning to support the claim.

Question 3
3.

Type the force below (it will have a lot of zeros).

Question 4
4.

Type the force below (it will have a lot of zeros).

Question 5
5.

Type the force below (it will have a lot of zeros).

Question 6
6.

Type the force below (it will have a lot of zeros).

Question 11
11.

What is the force when there is 4 meters between the spheres? (the number will have a lot of 0s)

Question 12
12.

What is the force when there is 6 meters between the spheres? (the number will have a lot of 0s)

Question 13
13.

What is the force when there is 8 meters between the spheres? (the number will have a lot of 0s)

Question 14
14.

What is the force when there is 10 meters between the spheres? (the number will have a lot of 0s)