Light Energy

What is the role of the lens in the eye?

• The lens helps to focus light onto the retina.

• The lens protects the eye from dust and debris.

• The lens regulates the amount of light entering the eye.

• The lens produces tears to keep the eye moist.

What does the pupil do in bright light?

• The pupil becomes larger.

• The pupil remains the same size.

• The pupil becomes smaller.

• The pupil changes color.

What is the difference between natural and artificial light?

• Natural light is brighter than artificial light.

• Natural light comes from sources like the sun, while artificial light is created by humans, like light bulbs.

• Artificial light is always more energy-efficient than natural light.

• Natural light can only be found indoors.

What is refraction of light?

• Refraction is the bending of light as it passes from one medium to another.

• Refraction is the reflection of light when it hits a surface.

• Refraction is the absorption of light by a medium.

• Refraction is the scattering of light in different directions.

What is light energy?

• Light energy is a form of energy that travels in waves and can be seen by the human eye.

• Light energy is a type of energy that is only visible in the dark.

• Light energy is the energy produced by chemical reactions in plants.

• Light energy is a form of energy that can only be detected by special instruments.

How is light energy transmitted? Light energy is transmitted as _________.

• Particles

• Waves

• Atoms

• Molecules

What is the importance of light for plants?

• Plants use light energy from the sun to make their food through photosynthesis.

• Light is essential for plant growth but does not contribute to food production.

• Plants use light to regulate their water intake and nutrient absorption.

• Light helps plants to produce flowers but is not necessary for their survival.

Which of the following is a source of light?

• Fire

• Rock

• Water

• Air

What provides Earth with heat and light?

• The Moon

• The Sun

• A Star

• The Earth

What is a shadow?

• A shadow is a reflection of an object in water.

• A shadow is a dark area created when an object blocks light.

• A shadow is a type of cloud formation.

• A shadow is the color of an object when light is absent.