Sound, Light, Mirrors & Lenses

When the surface of a mirror curves inward, like the inside of a bowl, it is called a _____. a

• plane mirror 
• convex mirror
• concave mirror
• diffuse mirror

The signals generated by the rods and cones are carried to your brain by the _____. 

• cornea
• pupil
• optic nerve
• lens

What instruments use lenses or mirrors to collect and focus light from distant objects? 

• microscopes
• optical fibers
• telescopes 
• lasers

Which device uses lenses to focus light rays and record an image of an object on photographic film? 

• microscope
• reflecting telescope
• refracting telescope
• camera

Clear glass, water, and air are examples of what kind of material?

• opaque
• fluid
• translucent
• transparent

The speed of sound depends on _____. 

• the loudness of the sound
• the pitch of the sound 
• the source of the sound
• the properties of the medium it travels through

What does it mean to reflect?

• bounce off
• bend
• refract
• energy

The following is a picture of what type of mirror? 

• Convex Mirror
• Concave Mirror
• Plane Mirror
• Flat Mirror

Light changes speed as it travels through various mediums.  What are examples of mediums that light can travel through.

• snow and ice
• air and water
• cloth and wood
• glass and wood

What is this image an example of?

• Reflection
• Diffusion
• Refraction