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Laabri

SCI 8 - RETEST Forces and Interactions (electricity & magnetism) 2023

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Last updated 5 months ago
11 Nsɛmmisa
Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:

BASICS - Questions 1-7 (miss < 2 or retest); APPLICATION - Question 8

BASICS - Questions 1-9 (miss < 2 or retest); APPLICATION - Question 10 & 11

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1.

In electricity, the current flows from ________ to ________.

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2.

How would the gravitational force be impacted if the moon moved closer to the earth?

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3.

Categorize ALL the following descriptions under the correct topic for electricity, magnetism or both.

  • Has charges that flow N to S

  • Has current that transfers + to -

  • Quick transfer of charges

  • Part of an electromagnet

  • This type of field can be created by the rotation of Earth

  • Created by aligned domains in an object

  • Strength of field is affected by size + distance

  • Non-contact forces

  • Create fields that can attract or repel

  • Used in chemical (ionic) bonding

  • Electricity

  • Magnetism

  • Both Electricity & Magnetism

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4.

Which types of charges would attract each other? (SELECT ALL THAT APPLY)

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5.

Moving a magnet near a compass can cause the compass needle to move, even though the magnet does not touch the compass. This observation is evidence for which characteristic of magnetic fields?

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6.

Students want to investigate how the amount of electric energy delivered to a motor affects its speed. Which of the following procedures will most likely produce the data students need to answer their question?

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7.

When the charge of an electromagnet is increased, what happens to the force?

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8.

This table above shows the magnitude of electromagnetic force exerted by two electromagnets on each other as the distance between the two electromagnets is varied. The data on the table provide evidence for which of the following conclusions?

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9.

The illustration above shows a hand generator. Turning the handle of the generator spins a magnet and creates an electric current that lights the bulb. Which of the following observations can be used to indicate the strength of the current created by the generator?

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10.

**Explain how a compass works.

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11.

**Look at the image and explain what it is and how it works. How could you make it stronger?