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Phet: Gravity Performance Task

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Last updated over 5 years ago
16 Nsɛmmisa

Phet: Gravity Performance Task

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?

3

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

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3
1
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1.

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

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2.

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

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3.

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

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1
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7.

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

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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.

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9.

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

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10.

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

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11.

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

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15.

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

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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.

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4.

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

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5.

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

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6.

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

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12.

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

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13.

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

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14.

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