Eighth Grade Science: Light

What is the speed of light in a vacuum?

• 300,000 km/s
• 150,000 km/s
• 75,000 km/s
• 1,000 km/s

Light travels in a straight line until it...

• slows down
• hits an object
• speeds up
• changes color

Which of the following is NOT a medium through which light can travel?

• Air
• Water
• Solid metal
• Vacuum

What happens to light when it travels from one medium to another?

• It changes direction
• It stops
• It becomes faster
• It stays the same

Light is a form of what type of energy?

• Kinetic
• Thermal
• Electromagnetic
• Potential

What type of mirror curves inward like the inside of a spoon?

• Plane mirror
• Convex mirror
• Concave mirror
• Flat mirror

Which statement is true about the angle of incidence and the angle of reflection?

• They are always different
• They are equal
• They add up to 90 degrees
• They add up to 180 degrees

What type of image is formed by a plane mirror?

• Real and inverted
• Virtual and upright
• Real and upright
• Virtual and inverted

How does a convex mirror affect the image of an object?

• It makes the image larger
• It flips the image upside down
• It makes the image smaller
• It does not change the image

What occurs when light bounces off a surface?

• Refraction
• Reflection
• Diffusion
• Dispersion