Spring Practice Final

What is the wavelength of the sine wave shown in the diagram?

• Wavelength = 1.0 cm

• Wavelength = 2 units

• Wavelength = 1 unit

• Wavelength = 0.5 cm

Tags

NGSS.HS-PS4-1

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.

A flashlight uses a lens to spread out light waves from a small bulb.

Which lens could be placed in front of the flashlight's bulb to spread out light waves?

• flat surface facing the bulb

• convex surface facing the bulb

• opaque surface facing the bulb

• concave surface facing the bulb

Tags

NGSS.MS-PS4-2

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?

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

A student measured four electromagnetic waves of different frequencies and wavelengths. Which electromagnetic wave has the most energy?

• wave 1

• wave 2

• wave 3

• wave 4

Tags

NGSS.MS-PS4-1

A student fashions an electromagnet from a coil of wire and an iron nail.

Why must the wire be connected to the battery for the electromagnet to work?

• 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.

Tags

NGSS.MS-PS2-3

A group of students have built an electromagnet using a 9-volt battery, an iron nail, and copper wire.

How can the strength of the electromagnet be increased?

• Increase the length of the nail

• Increase the size of the battery

• Increase the voltage of the battery

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

Tags

NGSS.MS-ETS1-1

A speaker produces sound waves in a column of air. The sound waves move from left to right through the air column as shown in the diagram. Using information from the diagram, what is happening to the gas particles as the sound waves move? Explain.

• 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 air particles move through the air particles, but the air particles do not move with the sound wave.

Tags

NGSS.MS-PS4-1

The image depicts two bar magnets immersed in oil that contains small needle-like particles of iron.

What is the BEST interpretation of the pattern created by the iron particles?

• 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.

Tags

NGSS.MS-PS2-5

The image depicts a permanent bar magnet immersed in oil that contains small needle-like particles of iron.

What is causing the iron particles to form the pattern observed in the oil when a permanent bar magnet is immersed?

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

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

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5