Exploring Matter, Light, and Electricity

What are the three states of matter?

• plasma, vapor, foam

• gas, liquid, crystal

• solid, liquid, plasma

• solid, liquid, gas

What is the property of light that allows us to see colors?

• Frequency

• Amplitude

• Intensity

• Wavelength

What is an electric circuit?

• A series of batteries connected in parallel.

• A device that stores electrical energy.

• An electric circuit is a closed path through which electric current flows.

• A type of electrical appliance that uses power.

What materials are considered conductors?

• Ceramics and paper

• Wood and plastic

• Rubber and glass

• Metals such as copper, aluminum, gold, and silver are considered conductors.

What is the difference between a conductor and an insulator?

• A conductor is a type of insulator that allows some current to flow.

• Both conductors and insulators allow current to flow equally.

• A conductor does not allow current to flow; an insulator does.

• A conductor allows current to flow; an insulator does not.

What happens to light when it reflects off a mirror?

• Light passes through the mirror without any change.

• Light is absorbed by the mirror and disappears.

• Light bends and changes direction when hitting the mirror.

• Light reflects off a mirror by bouncing back at the same angle it strikes the surface.

What is refraction in terms of light?

• Refraction is the reflection of light off a surface.

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

• Refraction is the scattering of light in all directions.

• Refraction is the absorption of light by a medium.

Name a simple machine and describe its function.

• Inclined Plane

• Lever

• Pulley

• Wheel and Axle

What is a shadow?

• A shadow is a type of color.

• A shadow is a dark area produced by an object blocking light.

• A shadow is a source of light.

• A shadow is an object that emits light.

What are the characteristics of solids, liquids, and gases?

• Solids: no definite shape, definite volume; Liquids: no definite volume, takes shape of container; Gases: definite shape and volume.

• Solids: takes shape of container, no definite volume; Liquids: no definite shape, no definite volume; Gases: definite shape, definite volume.

• Solids: no shape, no volume; Liquids: definite shape, no volume; Gases: definite shape, takes volume of container.

• Solids: definite shape and volume; Liquids: definite volume, takes shape of container; Gases: no definite shape or volume.