Electricity and Magnetism 3/31

On Earth, an astronaut has a mass of 140 kg. When the astronaut goes into space, she

• will have a mass of 140 kg, and have a weight of 140 kg.

• will have less mass and a weight of 140 kg.

• will have a mass of 140 kg, but will have less weight.

• will have less mass and weight.

What is the negatively charged particle that flows through a circuit?

• proton

• neutron

• electron

• ion

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NGSS.MS-PS2-5

The attraction of hair to a briskly rubbed plastic comb is an example of

• gravity

• static electricity

• radiation

• magnetism

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NGSS.MS-PS2-5

As an astronaut travels from Earth to a space station orbiting Earth, what happens to her mass and weight?

• Her mass increases as her weight decreases.

• Her mass remains the same, but her weight decreases.

• Her mass decreases and her weight also decreases.

• Her mass decreases, but her weight remains the same.

The force that holds you to Earth's surface is

• weight

• pressure

• mass

• gravity

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NGSS.MS-PS2-4

Which is true about friction and gravity?

• both cause heat

• both cause things to speed up

• both are forces

• both cause energy loss

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NGSS.MS-PS2-4

How can the materials in the diagram be used to make a magnet?

• touch the ends of the wire to the ends of the battery

• connect the ends of the wire to each other

• replace the iron nail with a wood rod

• add more loops of wire to the iron nail

If you were to travel to the moon, your weight would be about one-sixth of what it is on Earth. This is because the moon

• rotates much slower than Earth.

• has no water on its surface.

• has a much smaller circumference than Earth.

• is much less massive than Earth.

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Which conclusion is best supported by the results in the table?

• all metals are magnetic

• some metals are magnetic

• some nonmetals are magnetic

• all nonmetals are magnetic

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NGSS.MS-PS2-3

Which of the following is a true statement about the magnetic field between two magnets?

• The south pole of one magnet is attracted to the south pole of the other magnet.

• The north pole of one magnet is attracted to the north pole of the other magnet.

• The south pole of one magnet is attracted to the north pole of the other magnet.

• The south pole of one magnet is attracted to both poles of the other magnet.

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NGSS.MS-PS2-5