Exploring Electric and Magnetic Forces

What is a material that is attracted to a magnet?

• Wood

• Iron

• Plastic

• Glass

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DOK Level 1: Recall

Which of the following is a type of magnet that only works when electricity flows through it?

• Permanent Magnet

• Electromagnet

• Bar Magnet

• Magnetite

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DOK Level 1: Recall

What happens when an electric current flows through a wire wrapped around an iron nail?

• It becomes a permanent magnet

• It becomes an electromagnet

• It becomes a bar magnet

• It becomes a horse shoe magnet

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DOK Level 1: Recall

Which of the following are the magnetic poles?

• North and South

• East and West

• Up and Down

• Left and Right

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DOK Level 1: Recall

To increase the strength of an electromagnet, you would __________ the number of coils around the nail.

• Decrease

• Increase

• Keep the same

• Remove

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DOK Level 1: Recall

Which of these materials will a bar magnet be able to pull out from a mixture?

• Rubber

• Sand

• Sugar

• Iron Fillings

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DOK Level 1: Recall

A student needs to separate a mixture composed of iron fillings and sand. How can the student most easily separate all the iron fillings from the mixture?

• Use a magnet to attract the iron filings

• Use filter paper to isolate the iron filings

• Add water to the mixture and pour off the floating iron filings

• Add water to the mixture and allow it to evaporate and leave behind the iron filings

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DOK Level 1: Recall

All of these are magnetic EXCEPT...

• Sand

• Iron

• Nickel

• Cobalt

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DOK Level 1: Recall

The force of magnetism is stronger when magnets are ________________

• Cold

• Round

• Closer together

• Farther apart

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DOK Level 1: Recall

What is the best method of separation for removing iron from cereal?

• Sifting

• Sorting

• Evaporation

• Magnetic attraction

• Filtration

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DOK Level 1: Recall