# Exploring Creation with Physical Science Vocab

### 34 terms by magnoliagrace

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These ought to help with physical science tests!

### Physical Science

The study of the surrounding world and universe.

### Atom

The smallest stable unit of matter in Creation.

### Molecule

A group of two or more atoms linked together to form a unique substance.

### Element

A substance made up of billions of atoms of the same type.

### Compound

A substance made of billions of molecules of the same type.

### Mixture

A substance made of several different compounds and/or elements.

### Unit

A defined amount of measurement.

### The Metric System

a system of standard units

### Mass

The amount of matter in an object

### Gram

The metric unit for measuring mass.

### Slug

The English unit for measuring mass.

### Newton

The metric unit for measuring weight.

### Meter

The metric unit for measuring distance.

### Foot

The English unit for measuring distance.

### Liter

The metric unit for measuring volume (how much space an object occupies).

### Gallon

The English unit for measuring volume.

### Second

The English and metric unit for measuring time.

### Factor-label Method

A method for converting from one unit system to another that involves multiplying fractions.

### Celsius

The metric unit for measuring temperature.

### Concentration

The quantity of a substance within a certain volume.

### Humidity

The moisture content in the air.

### Heat Index

A measurement of the air temperature in relation to the relative humidity used as an indicator of the perceived temperature.

### Absolute Humidity

The mass of water vapor contained in a certain volume of air.

### Relative Humidity

The ratio of the mass of water vapor in the air at a given temperature to the maximum mass of water vapor the air could hold at that temperature, expressed as a percentage.

### Combustion

A chemical process by which oxygen reacts with a fuel to release energy.

### The Greenhouse Effect

The process by which certain gases (principally water vapor, carbon dioxide, and methane) trap heat that radiates from earth.

### Global Warming

The fear that the greenhouse effect might run out of control, heating the entire earth.

### Parts Per Million

The number of molecules (or atoms) of a substance in a mixture for every 1 million molecules (or atoms) in that mixture.

### Ozone

A poisonous gas composed of three oxygen atoms bonded together.

### Ultraviolet Light

Electromagnetic radiation with energy higher than visible light but lower than X-rays.

### Incomplete Combustion

Combustion in which not enough oxygen is supplied to completely burn the fuel. Carbon monoxide is a common product.

### Catalytic Converter

A term commonly used to refer to the device that converts carbon monoxide in the exhaust of an automobile into carbon dioxide.

### CAFE Standards

Government standards that regulate the average number of miles an automobile can travel on a single gallon of gasoline.

### Cost/benefit analysis

An analysis by which the potential benefits of a proposed action are weighed against the potential costs. Typically, an action is desirable if the benefits are higher than the costs.

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