Circuits, Light, Force Flashcardziz

Front

What is reflection in terms of light?

Back

Reflection is the bouncing back of light rays when they hit a surface. For example, when you look in a mirror, you see your reflection because light bounces off the mirror's surface.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, such as from air into water. This bending causes objects to appear distorted or broken when viewed through water.

Front

What is force?

Back

Force is a push or pull on an object that can cause it to move, stop, or change direction. It is measured in newtons (N).

Front

What is a periscope and how does it work?

Back

A periscope is an optical instrument that allows you to see objects that are not in your direct line of sight. It works by using mirrors to reflect light from the object to your eyes.

Front

What is the role of mirrors in a periscope?

Back

Mirrors in a periscope reflect light rays, allowing you to see objects that are above or below your line of sight.

Front

What happens to light when it enters water?

Back

When light enters water, it slows down and bends, which is known as refraction. This can make objects appear closer or distorted.

Front

What is the relationship between mass and force in an experiment?

Back

In an experiment, the force needed to lift or hold an object is related to its mass. More mass requires more force to lift.

Front

What is the definition of a medium in terms of light?

Back

A medium is a substance through which light travels. Common examples include air, water, and glass.

Front

What is the difference between reflection and refraction?

Back

Reflection is when light bounces off a surface, while refraction is when light bends as it passes through different media.

Front

What is an example of light being absorbed?

Back

An example of light being absorbed is when a black shirt absorbs sunlight, making it feel warmer than a white shirt, which reflects more light.