Electromagnetic Waves Light Reflection Refraction

A student placed a pencil in a cup of water.  The pencil appears broken because light-

• always travels in a straight line
• bends when it passes through water
• makes the water in the glass evaporate
• reflects the pencil on the water's surface

Tags

NGSS.MS-PS4-2

Refraction is the bending of a wave disturbance as it passes from one _________ into another.

• glass
• medium
• area
• boundary

Tags

NGSS.MS-PS4-2

According to the Law of reflection, a light ray striking a mirror

• continues moving through the mirror in the same direction
• moves into the mirror at a slightly different angle
• bounces off the mirror toward the direction it came from
• bounces off the mirror at the same angle it hits.

When light/waves move from one medium to another, change in ____ can be observed.

• speed, direction, frequency
• speed, direction
• frequency
• amplitude

Tags

NGSS.HS-PS4-1

A material or substance that a matter wave travels through is  ________

• a block
• a wall
• a medium
• an electromagnetic spectrum

Tags

NGSS.HS-PS4-1

What type of wave spreads out and goes through an opening or around corner?

• Reflection

• Refraction

• Interference

• Diffraction

How are electromagnetic waves different from other waves?

• They have very short wavelengths

• They transmit energy instead of matter

• They can travel through a vacuum

A wave of constant wavelength diffracts as it passes through an opening in a barrier. As the size of the opening is increased, the diffraction effects

• decrease

• increase

• remain the same

Parallel waves strike an opening in a barrier and are diffracted. For which combination of wavelength and size of opening will diffraction effects be greatest?

• short wavelength and narrow opening

• short wavelength and wide opening

• long wavelength and narrow opening

• long wavelength and wide opening

Tags

NGSS.HS-PS4-1

• absorption

• diffraction

• reflection

• refraction

• transmission

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5