Show:
Science Basics
Experiments & Variables
SI/Metric System
Dimensional Analysis & Scientific Notation
100

What is the definition of science?

The path to gaining knowledge about the natural world.

100

What is the independent variable in an experiment?

The factor that is manipulated/changed on purpose. 

100

What is the base unit for time?

Seconds

100

How many seconds are in 20 minutes? Show DA set up.

1200 seconds

200

What is the difference between a scientific law and theory?

Laws DESCRIBE phenomena

Theories EXPLAIN phenomena

200

What is the measurable outcome of an experiment?

Dependent variable

200
This is the abbreviation for the SI prefix for 1,000.
What is k?
200

Why do we use scientific notation?

To represent really large/small hard to work with numbers.

300

Give an example of a hypothesis in an if/then format.

Varies. If ______ then________

300

What are controls and why are they used?

Variables that remain constant in an experiment. Used for comparison and to make sure the experiment is only testing one thing at a time. 

300

This is the SI prefix for 1/100 or .01.

What is centi?

300

Convert using DA: 13.09 m to cm

1309 cm

400

What are the two types of data used in experiments? Given an example of both as well to earn points. 

Quantitative - 2 seconds 

Qualitative - red liquid

400

Set up a graph. Label your axis's and indicate what variable goes where. 

Y vertical dependent, X horizontal independent

400

Conver 4,800 mL to L

4.8 L

400

Convert the following number to scientific notation:

.000000000040685

4.0685 x 10 ^ -11

500

What has to happen for a hypothesis to be fully accepted in the scientific community?

Must be supported by the experiment results first, then must be supported by the work of other scientists under peer review.

500

Example Experiment: A student wants to find out if sugar dissolves faster in warm or cold water by placing equal amounts of sugar in both, measuring the time to dissolve, and comparing the results to see if warm water dissolves sugar more quickly.

What are the independent and dependent variables of this experiment? What are two things that should remain controlled/constant?

I: Temperature of water

D: Time it takes for sugar to dissolve completely

Controls: Beaker/cup, sugar brand, type of sugar (cube, granular), stirring or nonstirring, amount of sugar

500

Convert: .0635 kg to mg

63,500 mg

500

Convert using DA: 1.47 kg to mg. (hint: two steps)

1470000 mg