Year 10 Physics waves so far

The law of reflection states that...

• The angle of reflection is equal to the angle of reflection

• The angle of refraction is equal to the angle of reflection

• Reflection occurs at all boundaries

• The angle of incidence is equal to the angle of reflection

Tags

NGSS.MS-PS4-2

The normal is....

• A dotted line perpendicular to the boundary of a surface

• A dotted line parallel to the boundary of a surface

What is the phenomenon of sound wave bouncing back from a barrier?

• Refraction

• Reflection

• Diffraction

• Interference

Tags

NGSS.MS-PS4-2

The range of human hearing is between...

• 20k-200k Hz

• 10-10k Hz

• 20-20k Hz

• 30-30k Hz

Tags

NGSS.HS-PS4-1

Sound beyond 20,000 Hz is called

• Infrasound

• Ultrasound

• Supersound

• Megasound

Tags

NGSS.HS-PS4-1

Waves changing direction at a boundary is called....

• Refraction

• Reflection

• Absorption

• Transmission

Refraction occurs because...

• Light is bent by gravity

• Surfaces are bent and bend the light

• We do not know

• The light changes speed as it enters a new medium

Tags

NGSS.MS-PS4-2

When light enters a more optically dense medium it refracts...

• Towards the normal

• Away from the normal

When light enters a less optically dense medium it refracts...

• Towards the normal

• Away from the normal

What is the range of frequency for Infrasound?

• Below 20 Hz

• 20-20k Hz

• Above 20k Hz

• 10-10k Hz

Tags

NGSS.HS-PS4-1