Science Category Review

• Wavelength = 1.0 cm

• Wavelength = 2 units

• Wavelength = 1 unit

• Wavelength = 0.5cm

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If a magnet is cut into unequal size pieces, how many north and south poles will each of the pieces have?

• Neither piece will have a north or a south pole

• Each piece will have one north and one south pole

• Each piece will have one pole, either north or south

• Only the larger piece will have a north and a south pole

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• flat surface facing the bulb

• convex surface facing the bulb

• . opaque surface facing the bulb

• concave surface facing the bulb

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Which of the following questions explains the type of wave which can travel at the speed of light?

• What is an electromagnetic wave?

• What is a longitudinal wave?

• What is a mechanical wave?

• What is a transverse wave?

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• wave 1

• wave 2

• wave 3

• wave 4

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• A. The battery supplies charges to the coil

• The battery supplies electrons to the coil

• The battery removes charges from the coil.

• The battery removes electrons from the coil.

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• . increase the length of the nail

• . increase the length of the nail

• increase the voltage of the battery

• increase the diameter of the wire used to make the coil

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• The sound wave produces compressions in the air where the air particles are close together because the air pressure is lower in these regions

• The sound wave pushes the air particles along the column of air as it moves from left to right because the sound wave takes up space

• The sound wave produces compressions and rarefactions in the column of air. In compressions, the air particles are close together. The compressed air particles move with the sound wave.

• The sound waves produce compressions and rarefactions in the column of air. The compressions move through the air particles, but the air particles do not move with the sound wave.

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• The pattern of iron particles is created by the north pole of one magnet facing the south pole of the other magnet.

• The pattern of iron particles is created by opposite poles of the two magnets attracting each other.

• The pattern of iron particles is created by the south pole of one magnet facing the south pole of the other magnet because only south poles attract each other.

• The pattern of iron particles is created by the repulsion of like magnetic poles, we cannot determine if the poles are north or south polarization.

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• The iron particles are lining up with the electric field created by the magnet.

• The iron particles are lining up with the lines of magnetic force that exist outside of the bar magnet.

• The iron particles are lining up with the magnetic field created when an electric current passes through the metal bar

• The iron particles are lining up with the magnet field of the Earth, because the magnet is pointing toward the Earth’s north and south poles.

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