Jeopardy Science 9 WAVES

REFLECTION REFRACTION SOUND LIGHT 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400 500 500 500 500

Sound waves are what type longitudinal Sound waves are what type of wave? Row 1, Col 1

Why are higher frequencies The waves have more energy and move faster. Why are higher frequencies more dangerous to us? 1,2

State the Law of Reflection. The angle of incidence = the angle of reflection State the Law of Reflection. 1,3

The bending of light as it passes through different mediums. What is refraction? 1,4

What determines the speed The MEDIUM it travels through. What determines the speed of sound? 2,1

If you are nearsighted (can’t see far), what type of lenses diverging If you are nearsighted (can’t see far), what type of lenses do you need? 2,2

What type of mirror do stores use to be able to see around convex What type of mirror do stores use to be able to see around corners? 2,3

Which type of lens brings converging Which type of lens brings light rays together? 2,4

What is frequency measured hertz (Hz) What is frequency measured in? 3,1

Light waves produce color. wavelength being absorbed. False, the color we see is the REFLECTED wavelength. Light waves produce color. The color we see is that wavelength being absorbed. TRUE or FALSE? 3,2

What are the two types of reflection we talked about? Smooth surface and diffuse reflection What are the two types of reflection we talked about? (think of the surfaces light reflects off of) 3,3

When light moves from air to water, how does the speed The light ray would slow down When light moves from air to water, how does the speed change? 3,4

What frequency range can humans 20 Hz – 20,000 Hz What frequency range can humans hear? 4,1

Refraction occurs when light passes through different ___________ Mediums and/or lenses Refraction occurs when light passes through different ___________ 4,2

If a light ray comes in at 30° to the normal, what is the angle of reflection? 4,3

What main part of the eye lens What main part of the eye refracts light? 4,4

Small instruments: high pitch, high frequency, short wavelength Small instruments: high pitch, high frequency, short wavelength. Large instruments: low pitch, low frequency, longer wavelength Describe PITCH, FREQUENCY, and WAVELENGTH in terms of musical instruments. 5,1

What is the spectrum called that includes all possible kinds Electromagnetic spectrum What is the spectrum called that includes all possible kinds of light? 5,2

Explain why echoes happen? Sound bounces off of surfaces (usually emptier areas) and since there is nothing to absorb the sound it bounces off another surface so we hear it again. Explain why echoes happen? 5,3

Explain how a mirage is formed (what is it?) When heat from the ground is trapped by the cool air above it. (temperature differences between air and ground) Explain how a mirage is formed (what is it?) 5,4