| Question | Answer |
| magnetism | the pulling force of a magnet |
| flow | the movement of energy, water , mud, or lava |
| effect | a change resulting from an action |
| thermal energy | the energy of moving particles that produces heat |
| friction | the force that resists motion when two surfaces rub against each other |
| light energy | a type of electromagnetic radiation that can be seen |
| test | to carry out an investigation |
| design | to create or plan |
| circuit | the path of an electrical current |
| energy | the ability to do work or cause change |
| spring scale | a tool to measure weight using the force of gravity |
| camera | a tool used to take photographs |
| demonstrate | to show or make evident |
| closed circuit | an electrical path with no breaks or gaps |
| medium | a substance through which energy or waves travel |
| reflection | light energy that bounces off of a surface |
| reliability | the degree to which results of an investigation are valid and dependable |
| buzzer | an electrical device that makes a buzzing noise |
| sound energy | a type of energy caused by vibrating sound waves |
| refraction | the bending of light rays as they pass from one substance to another |
| force | a push or pull that causes an object to move, stop, or change direction |
| demonstrate | to show or make evident |
| heat | transfer of energy between two objects when the objects are different temperatures |
| concave lens | a type of lens that is thinner in the middle |
| mirror | a reflective surface, usually silver in color |
| explore | to search or investigate |
| electricity | energy created by charged particles |
| bulb | the glass part of an electrical lamp that gives off light |
| switch | a device that closes or opens a circuit |
| experimental investigation | a type of investigation in which variables are tested |
| absorb | to soak up or take in |
| investigation | the act or process or using inquiry to gather facts |
| travel | to move from one place to another |
| gravity | a force that pulls objects towards each other |
| prism | a transparent, three dimensional shape used to separate white light into the color spectrum |
| current | the flow of electricity through a conductor |
| convex lens | a type of lens that is thicker in the middle |
| results | outcome of an investigation |
| electrical energy | the form of energy that consists of a flow of electric charges through a conductor |
| battery | a device containing a dry cell that supplies a direct current by converting chemical energy into electrical energy |
| repeated investigation | an investigation that is conducted multiple times |
| path | the course or route something travels |
| variable | a condition or factor that changes in an investigation so the effects can be observed |
| object | something that can be seen and touched |
| experimental investigation | a type of investigation in which variables are tested |
| wires | thin strands made of metal used to carry electricity |
| mechanical energy | then energy in an object due to its position or motion |
