15. the table below shows evidence for this claim: objects are affected by the fields of noncontact forces. analyze the evidence and complete the table by filling in the supports claim and reasoning columns. use the example in the first column to guide your answers.

| evidence | supports claim (yes / no) | reasoning |
| --- | --- | --- |
| maglev trains hover above the track. | yes | the magnets in the train and the track exert pushing forces on each other. |
| if you rub your hair with a balloon, the balloon and your hair attract each other when they are close. they do not attract each other when they are far apart. | | |
| a bike slows down if you do not pedal as its wheels roll over pavement. | | |
| the moons of jupiter orbit jupiter because they are pulled toward jupiter. the moons of jupiter are too far to be pulled into earth’s orbit. | | |

Question

15. the table below shows evidence for this claim: objects are affected by the fields of noncontact forces. analyze the evidence and complete the table by filling in the supports claim and reasoning columns. use the example in the first column to guide your answers.

| evidence | supports claim (yes / no) | reasoning |
| --- | --- | --- |
| maglev trains hover above the track. | yes | the magnets in the train and the track exert pushing forces on each other. |
| if you rub your hair with a balloon, the balloon and your hair attract each other when they are close. they do not attract each other when they are far apart. |  |  |
| a bike slows down if you do not pedal as its wheels roll over pavement. |  |  |
| the moons of jupiter orbit jupiter because they are pulled toward jupiter. the moons of jupiter are too far to be pulled into earth’s orbit. |  |  |

Accepted Answer

# Brief Explanations:
### For "If you rub your hair with a balloon..."
- **Supports Claim**: Yes.
- **Reasoning**: Rubbing creates static charge (electric field). The balloon and hair attract when close (field acts) but not far (field’s effect weakens with distance), showing noncontact (electric) force affects them.

### For "A bike slows down..."
- **Supports Claim**: No.
- **Reasoning**: The bike slows due to friction (a contact force, between wheels and pavement), not a noncontact force. The claim is about noncontact forces, so this evidence does not support it.

### For "The moons of Jupiter..."
- **Supports Claim**: Yes.
- **Reasoning**: Jupiter’s gravity (a noncontact force) pulls its moons into orbit. The moons are not pulled by Earth’s gravity (too far) – this shows they are affected by Jupiter’s noncontact gravitational field.

# Answer (Filled Table Structure):
| Evidence                                                                 | Supports Claim (Yes/No) | Reasoning                                                                 |
|--------------------------------------------------------------------------|-------------------------|--------------------------------------------------------------------------|
| Maglev trains hover above the track.                                     | Yes                     | The magnets in the train and the track exert pushing forces on each other. |
| If you rub your hair with a balloon... (as above)                        | Yes                     | Rubbing creates static charge (electric field). Attraction occurs when close (field acts) but not far (field’s effect weakens), showing noncontact force. |
| A bike slows down if you do not pedal... (as above)                      | No                      | Slowing is due to friction (contact force, wheels-pavement), not noncontact force. |
| The moons of Jupiter orbit Jupiter... (as above)                         | Yes                     | Jupiter’s gravity (noncontact force) pulls moons into orbit; Earth’s gravity does not affect them (too far), showing noncontact force impact. |

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Question

Explanation:

For "If you rub your hair with a balloon..."

For "A bike slows down..."

For "The moons of Jupiter..."

Answer:

evidence	supports claim (yes / no)	reasoning
if you rub your hair with a balloon, the balloon and your hair attract each other when they are close. they do not attract each other when they are far apart.
a bike slows down if you do not pedal as its wheels roll over pavement.
the moons of jupiter orbit jupiter because they are pulled toward jupiter. the moons of jupiter are too far to be pulled into earth’s orbit.

Evidence	Supports Claim (Yes/No)	Reasoning
If you rub your hair with a balloon... (as above)	Yes	Rubbing creates static charge (electric field). Attraction occurs when close (field acts) but not far (field’s effect weakens), showing noncontact force.
A bike slows down if you do not pedal... (as above)	No	Slowing is due to friction (contact force, wheels-pavement), not noncontact force.
The moons of Jupiter orbit Jupiter... (as above)	Yes	Jupiter’s gravity (noncontact force) pulls moons into orbit; Earth’s gravity does not affect them (too far), showing noncontact force impact.