What causes particles in a substance to move faster?

• Decreasing temperature

• Increasing temperature

• Removing energy

• Reducing pressure

How do gas particles behave in a container?

• They stay in one place

• They move in random directions

• They form a fixed shape

• They only move when shaken

Which of the following best describes reflection?

• Light bending as it enters a new medium

• Light bouncing off a surface

• Light being absorbed by an object

• Light spreading in all directions

What type of surface produces a clear reflection?

• Rough and uneven

• Smooth and shiny

• Dark and soft

• Transparent and rough

Which law explains the angle at which light reflects?

• Law of Gravity

• Law of Reflection

• Newton’s First Law

• Law of Refraction

What happens when light passes from air into water?

• It speeds up

• It slows down and bends

• It continues in the same direction

• It disappears

What is refraction?

• Light bouncing off a surface

• Light changing direction as it passes through a medium

• Light being absorbed by a material

• Light producing heat

Why does a straw appear bent in a glass of water?

• Because of reflection

• Because of refraction

• Because of absorption

• Because of dispersion

What is a rainbow?

• A mixture of clouds and sunlight

• A spectrum of light caused by refraction and dispersion

• A reflection of sunlight on wet surfaces

• A type of cloud formation

Which phenomenon helps in making a rainbow?

• Reflection

• Refraction and dispersion

• Absorption of light

• Light traveling in a straight line