Week 4 test - Due 09.16.2020 - 15:00 -

____ 1. This is the variable we put along the X axis when we graph the results of an experiment,

a.

Dependent.

b.

Independent.

c.

Control.

d.

The ‘X’ variable.

____ 2. The BIG BANG occurred about ...

a.

14 thousand years ago.

b.

14 billion years ago.

c.

14 million years ago.

d.

14 hours ago..

____ 3. Our solar system is just over ...

a.

4 billion years old.

b.

4 million years old.

c.

4 thousand years old.

d.

400,000 years old.

____ 4. A fraction such as ( 2.54 centimeters / 1 inch ), where the numerator and denominator are the same value expressed in different units, is an example of a ...

a.

unit

b.

length.

c.

variable

d.

conversion factor

____ 5. When graphing the results of an experiment, we place the DEPENDENT VARIABLE along the ...

a.

x axis.

b.

y axis..

c.

origin..

d.

diagonal axis..

____ 6. The Periodic Table of Elements is a list of all the know elements (atoms.) About how many known types of elements are there?

a.

1,000.

b.

100,000.

c.

100

d.

14 billion

____ 7. In our experiment using a pendulum, which was the DEPENDENT variable?

a.

The length of our string..

b.

The MASS at the end of our string..

c.

How far we pulled back the string.

d.

The PERIOD, “swing time,” of the pendulum.

____ 8. You are graphing the results of an experiment and the “dots” (data points) on the graph form an almost straight, horizontal, line. From this you can probably state ...

a.

The independent variable has a strong effect on the dependent variable.

b.

The experiment is flawed.

c.

The independent variable has a small effect on the dependent variable.

d.

The independent variable has NO effect on the dependent variable.

____ 9. One meter is equal in length to ...

a.

one liter.

b.

one yard.

c.

100 centimeters.

d.

do all of the above.

____ 10. The metric unit of MASS is ...

a.

the pound.

b.

the stone.

c.

the kilogram.

d.

the meter.

Week 4 test

A

## Friday, September 11, 2020

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