Lenses and Light

___ is when light travels through a material and bends.

• Diffraction
• Dispersion
• Mirage
• Refraction

The point where the rays meet is known as....

• Fire
• the focal point
• refraction
• Plane of the lens

Which describes a convex lens?

• triangular in shape
• more transparent in the middle
• thicker on the edges than in the middle
• thicker in the middle than on the edges

Is a convex lens thicker or thinner in the middle?

• Thicker 
• Thinner 

Is a concave lens thicker or thinner in the middle? 

• Thicker 
• Thinner 

When light waves move from passing through air to passing through a glass lens when happens to them?

• They slow down and change direction

• They speed up and change direction

• They maintain the same speed and change direction

• They maintain their same speed and direction

This diagram best represents 

• reflection
• refraction
• absorption
• diffusion

How does light travel

• It curves around corners
• Really slow
• In a straight line
• In circles

What does the word "diverging" mean?

• to spread apart
• to come together
• parallel
• perpendicular

Echolocation uses which of the following wave characteristics?

• Refraction
• Reflection
• Doppler Effect
• Diffraction