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Category 2 Review
Uses of Energy, Circuits, Light and Forces
Question | Answer |
---|---|
energy | the ability to do work or cause change |
electrical energy | the form of energy that consists of a flow of electric charges through a conductor |
experimental investigation | a type of investigation in which variables are tested |
explore | to search or investigate |
light energy | a type of electromagnetic radiation that can be seen |
mechanical energy | then energy in an object due to its position or motion |
sound energy | a type of energy caused by vibrating sound waves |
thermal energy | the energy of moving particles that produces heat |
battery | a device containing a dry cell that supplies a direct current by converting chemical energy into electrical energy |
bulb | the glass part of an electrical lamp that gives off light |
buzzer | an electrical device that makes a buzzing noise |
circuit | the path of an electrical current |
closed circuit | an electrical path with no breaks or gaps |
current | the flow of electricity through a conductor |
demonstrate | to show or make evident |
electricity | energy created by charged particles |
flow | the movement of energy, water , mud, or lava |
heat | transfer of energy between two objects when the objects are different temperatures |
path | the course or route something travels |
switch | a device that closes or opens a circuit |
wires | thin strands made of metal used to carry electricity |
absorb | to soak up or take in |
camera | a tool used to take photographs |
concave lens | a type of lens that is thinner in the middle |
convex lens | a type of lens that is thicker in the middle |
demonstrate | to show or make evident |
medium | a substance through which energy or waves travel |
mirror | a reflective surface, usually silver in color |
prism | a transparent, three dimensional shape used to separate white light into the color spectrum |
reflection | light energy that bounces off of a surface |
refraction | the bending of light rays as they pass from one substance to another |
travel | to move from one place to another |
design | to create or plan |
effect | a change resulting from an action |
experimental investigation | a type of investigation in which variables are tested |
force | a push or pull that causes an object to move, stop, or change direction |
friction | the force that resists motion when two surfaces rub against each other |
gravity | a force that pulls objects towards each other |
investigation | the act or process or using inquiry to gather facts |
magnetism | the pulling force of a magnet |
object | something that can be seen and touched |
reliability | the degree to which results of an investigation are valid and dependable |
repeated investigation | an investigation that is conducted multiple times |
results | outcome of an investigation |
spring scale | a tool to measure weight using the force of gravity |
test | to carry out an investigation |
variable | a condition or factor that changes in an investigation so the effects can be observed |