2. Modeling Data self-eval q's

In an experimental situation, the factors which are held static are called

constants

One complete swing of the pendulum is called

an oscillation

Given a problem such as the complete burning of a substance, the variables are: time taken for complete combustion, mass of substance, specific gravity, composition of substance, and caloric output of burning material. Identify the best measurable dependent variable.

time

In the experiment concerning the pendulum (involving the variables mass, amplitude, length, and period. Which was used as the dependent variable?

period

Is the following graph correct?

No

Is this graph correct?

no

How many dependent variables do we handle at one time in our labs?

no more than one at a time

An experiment is going to be developed that investigates how the amount of time students study affects their exam scores. Identify the dependent variable

exam scores

Arrange the following steps of scientific investigation in order:

1) develop conclusion

2) identify variables

3) conduct experiment

4) analyze data

5) identify research question

6) develop hypothesis

5, 6, 2, 3, 4, 1

A research question asks: Does the period of a pendulum depend on gravitational forces? Which of the following is a correctly written hypothesis?

As the gravitational force increases the period of the pendulum will decrease