Physical Science Review

Scientific Method

100

This describes the variable that is altered by the experimenter 

Independent Variable

200

This is the SI unit that measures temperature

K, Kelvin

300

Convert 25 micrometers to meters

0.000025 meters

400

List the 6 steps of the scientific method

Ask a question

Gather information

Form a hypothesis

Run an experiment

Analyze data

Draw Conclusions

500

Calculate the volume of a cylinder with radius 4 mm, height 10 m. Answer in m^3

0.00005024 m^3

Properties of Matter

100

This is the physical property that describe the temperature at which a solid can turn into a liquid

Melting point

200

This is the amount of energy required to bring a liquid at boiling point to a gas at the same temperature

Heat of vaporization

300

Find the density of a 5 km^3 oil rig that weighs 200 million kilograms. Answer in kg/km^3

200/5 = 40 million kg/m^3

400

This state of matter forms when air turns from an insulator to a conductor

Plasma

500

The volume of a box is incapable of changing. Its pressure increases by 4 times. What happens to its temperature and by how much?

Temperature increases 4 times

Force and Motion

100

If a train travels 5 meters in 0.5 seconds, what is its velocity?

10 m/s

200

A man runs around the track starting and ending in the same spot. He travels 400 meters in 60 seconds. What is his velocity?

0 m/s

300

This law of motion explains why after crashing your car, you go flying forward.

Newton's first law

400

A government contractor wants build a 36,000 kg ICBM that can accelerate at 20 m/s^2. How much force would this require?

720,000 Newtons

500

Find the acceleration of a bike that begins at 10 m/s and slows down to 3 m/s in 2 seconds. (This should be negative)

-3.5 m/s^2

Chemical Reactions

100

After an unknown reaction you find evidence that the only products were CO2 and H2O. What kind of reaction was it?

Combustion

200

Sulfur HexaFluoride would have this chemical formula

SF6

300

This is the scientific name of N2O3

Dinitrogen trioxide

400

You find salt and water after an unknown reaction, What kind of reaction would this likely be?

Acid Base reaction

500

You are unsure what reactants or products are formed in a reaction but you do notice that solid powder is beginning to form in solution. What kind of reaction is it?

Precipitation

Waves

100

This is the only non-mechanical wave we have discussed

Light wave

200

This describes a wave that oscillates parallel to its direction

Longitudinal

300

This describes the height of a peak/trough relative to the normal of a wave

Amplitude

400

This describes what happens to a wave as it changes speed

Refraction

500

Name the two waves that make up a light wave

Electric and magnetic, electromagnetic radiation