Science QA #2 Review

Front

What is an electrical circuit?

Back

An electrical circuit is a closed loop that allows electric current to flow, typically consisting of a power source, wires, and a load (like a light bulb).

Front

What do you need to complete an electrical circuit?

Back

You need to connect a wire from the light fixture to the negative post of the battery after connecting one wire to the positive post.

Front

What is the purpose of a spring scale in experiments?

Back

A spring scale measures the force applied to an object, usually in units of grams or newtons.

Front

How do different surfaces affect the amount of force needed to move an object?

Back

Different surfaces create varying amounts of friction, which affects how much force is needed to move an object across them.

Front

What tools are helpful for investigating reflection and refraction?

Back

Mirrors and prisms are useful tools for studying how light reflects and refracts.

Front

What is reflection in terms of light?

Back

Reflection is when light bounces off a surface, such as a mirror.

Front

What is refraction in terms of light?

Back

Refraction is the bending of light as it passes from one medium to another, like air to water.

Front

Which materials best reflect light?

Back

Materials like foil, shiny pans, and mirrors are excellent at reflecting light.

Front

What happens to a pencil in water that makes it look broken?

Back

The bending of light as it moves from water to air causes the pencil to appear broken; this is an example of refraction.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light, while refraction is the bending of light as it passes through different materials.