Science mass, gravity, volume, metric conversions test

Metric conversion

Express certain measurements in easier terms putting one measurement in terms that you are familiar with.

Meters

Distance

Liters

Volume

Grams

Mass

1 step=

1 decimal place movement

Example: 500 KG =___MG

500,000,000 MG

Example: 4.5Mg=____Ng

4,500,000

The mass of an astronaut is 110kg on Earth, what happened to his mass when he landed on the moon Explain:

Nothing happened to the astronauts mass, mass stays the same no matter where you are in the universe, what did change was his weight.

What is volume

The amount of liquid or space an object takes up( or is )

Volume is not

3D while area= 2D

There are 3 ways to measure volume

Irregular shaped solids-water displacement

Regular(geometric) LxWxH

Liquids graduated cylinder

1ml=_____

1cm3 (cubed)

What is mass?

The amount of matter in an object

Mass is measured using a :

Triple beam balance (or just balance)

Mass is measured in

Grams or Kilograms

Which object is more massive? Which object has more mass?

Having more mass and being massive is the same thing, in this case object #2 is more massive and has more mass.

What is gravity?

Gravity is the force of attraction between two objects with mass

The strength of Gravity depends on:

Distance and mass. Distance is more important than mass when talking about gravity.

What is weight?

Weight is the gravitational pull on an objects mass.

Mass Vrs weight

Density

The compactness of matter in a given space

Density formula:

D=M(mass)/V(volume)

Practice Density formula questions:

D= 0.6 g/cm3 M= 54g——- V= 90cm3

D=1.0 g/cm3 V= 4.0 cm3—— M= 60g

Separation

Different materials separate/organize each other by density

The density of a pure substance

Always stays the same

Ex. Gold 19.3 g/cm3– always stays the same not matter the amount of cold

Density of water

Maximum- 1.0 g/ml @ 4 degrees Celsius

Density of water is odd because

Most substances are most dense when they are a solid

Three states of matter

Solid, liquid, and gas

Maximum and minimum densities

Maximum density usually occurs in the solid state

Minimum density usually occurs in the gas state

****exception water is most dense at 4 degrees Celsius, which is the liquid state.

We can determine the density of an object by placing it in water: steps

1.) place object in water

2.) estimate the percentage of the object that is submerged in the water

3.) multiply percentage by the density of water

Temperature

A change in temperature can change density( heat makes objects expand)

Temp goes up, volume goes up, density ones down

Air pressure

High air pressure= lower volume= higher density

Low air pressure= higher volume= lower density

Graphing with density: