Light Energy

What is light energy?

• Light energy is a form of solid matter

• Light energy is a form of sound waves

• Light energy is a form of electromagnetic radiation that is visible to the human eye.

• Light energy is a form of thermal energy

How does light travel?

• Light travels in straight lines called rays or waves.

• Light travels in spiral paths

• Light travels in random directions

• Light travels in zigzag patterns

What are some sources of light energy?

• Moon

• Sun, light bulbs, candles, fire

• Stars

• Flashlight

What is reflection of light?

• Reflection of light is the process where light passes through a surface.

• Reflection of light is the process where light disappears upon hitting a surface.

• Reflection of light is the process where light is absorbed by a surface.

• Reflection of light is the process where light bounces off a surface.

What is refraction of light?

• Refraction of light is the absorption of light by a medium

• Refraction of light is the bending of light as it passes from one medium to another due to a change in its speed.

• Refraction of light is the reflection of light off a surface

• Refraction of light is the emission of light from a source

How does light help us see objects?

• Light absorbs into objects and creates a visual image

• Light reflects off objects and enters our eyes, allowing our brain to process the visual information.

• Objects emit light that our eyes detect

• Sound waves interact with objects to create visual perception

What is the difference between transparent, translucent, and opaque objects?

• Transparent objects absorb light completely, translucent objects allow light to pass through completely, and opaque objects allow some light to pass through but not completely.

• Transparent objects do not allow light to pass through at all, translucent objects allow light to pass through completely, and opaque objects allow some light to pass through but not completely.

• Transparent objects allow light to pass through completely, translucent objects allow some light to pass through but not completely, and opaque objects do not allow light to pass through at all.

• Transparent objects allow some light to pass through but not completely, translucent objects do not allow light to pass through at all, and opaque objects allow light to pass through completely.

How does light energy affect plants during photosynthesis?

• Light energy is absorbed by chlorophyll in plant cells to drive the process of photosynthesis.

• Light energy is used by plants to produce heat instead of driving photosynthesis.

• Light energy is harmful to plants and inhibits photosynthesis.

• Plants convert light energy into sound waves during photosynthesis.

What is a shadow and how is it formed?

• A shadow is created by the reflection of light on a surface.

• A shadow is formed when an object blocks the path of light, creating a silhouette on a surface.

• Shadows are formed when objects emit light.

• A shadow is formed when an object absorbs light instead of blocking it.

How can we protect our eyes from harmful light energy?

• Eat carrots

• Wear gloves

• Stare directly at the sun

• Wear sunglasses, use computer glasses, take breaks, ensure proper lighting