Intro to Physics - Test 1

SI System of Measurement

100

The amount of matter an object has

Mass

200

Where should you measure the liquid to in a graduated cylinder

The LOWEST part of the miniscus

300

This is a MEASURE of how COMPACT an object is  

                        Mass /  Volume

Density

400

Give some examples of units that can be used to measure density

grams/ml

kilograms/Liter

NOT  kilograms/foot (foot is a lenth, not a volume)

500

Examples of measures of VOLUME

Liter, cm3, mL

Not - meter, kilometer, etc

Science Experiments

100

Factors in an experiment that are CONSTANT (do not change)

Controls

200

How many independent variables should be included in a proper experiment?

1.....if you change two variables at the same time you can't know which one affected the outcome

300

Give an example of a good and bad testable question

Good - how does the amount of sunlight affect the growth of my lawn?

Bad - how does milk become cheese?

400

Give an example of a proper hypothesis for an experiment

Contains IF, THEN, BECAUSE

If l drop the ball from higher, then it will be going faster when it hits the ground, because it will have gravity acting on it for longer.

Measurement

100

What is the actual definition of a METER

The distance light travels in 1/299,792,458 of a second

200

What is true about a 1kg iron bar and a 1kg pillow?

They have the same MASS, but different densities.

300

How will you know if an object will sink or float in a liquid with a density of 1g/ml

Objects greater than 1 will sink, objects less than 1 will float

Graphs

100

When would be a good time to use a BAR GRAPH

bar graphs are used when you have specific categories (different shoe brands)

200

What axis of a graph should the INDEPENDENT variable go on?

X axis - this is the horizontal part of a graph

Stuff you need to be able to DO!

100

Find the Density of a block that has a mass of 50 grams and a volume of 5 mL

Density = Mass / Volume

50g/5ml = 10 grams/mL

200

Find the Volume of a Prism

length x width x height

300

Be able to use a ruler to measure the length of an object in both cm and mm.

Example - and object that is 3 cm is also 30mm

5.5 cm = 55mm

400

Given a hypothesis situation you must be able to identify the 

Independent, Dependent, Experimental Controls

If I pull the swing higher (IV), then it will go higher on the other side (DV) because it has more momentum.

Controls: Length of swing, weight of swinger, wind resistance

500

Bonus Material

During the test on Monday, write the word <bananas> behind your name to receive 2 bonus points on the test.