Unit 0 Exam

Question 1

A scientist wanted to see how the amount of salt in water affects plant life in the water. Dependent variable?

Accepted Answer

the number of plants in the water

Question 2

Plant A gets no fertilizer, Plant B gets 5 mg of fertilizer Plant C gets 10 mg of fertilizer. What is the control group?

Accepted Answer

Plant A

Question 3

A scientist wanted to see how the amount of salt in water affects plant life in the water. Independent variable?

Accepted Answer

the amount of salt in the water

Question 4

A controlled experiment allows the scientist to isolate and test

Accepted Answer

a single variable

Question 5

How many significant figures are present in the number: 1.200

Accepted Answer

4

Question 6

What is 0.00006 in scientific notation? (Remember sig fig rules and that ^ means to the power of )

Accepted Answer

6 x 10 ^ -5

Question 7

If you wanted to measure the distance from here to Salt Lake City in Utah, what would be the BEST unit to use?

Accepted Answer

kilometers

Question 8

Calculate the answers to the appropriate number of significant figures: 28.367 / 3.74

Accepted Answer

7.58

Question 9

How many significant figures are present in the number: 0.070

Accepted Answer

2

Question 10

What is 171,000 in scientific notation? (Remember sig fig rules and that ^ means to the power of )

Accepted Answer

1.71 x 10 ^ 5

Question 11

How many significant figures are present in the number: 6060

Accepted Answer

3

Question 12

What is 8.20 x 10 ^2 in standard notation? (Remember sig fig rules and that ^ means to the power of )

Accepted Answer

820.

Question 13

In an experiment, the factor that is measured is called the

Accepted Answer

dependent variable

Question 14

Scientists publish the details of important experiments so that

Accepted Answer

all of the above

Question 15

What is (4 x 10 ^ 2) + (7 x 10 ^ 3)? (Remember sig fig rules and that ^ means to the power of)

Accepted Answer

7.4 x 10 ^ 3

Question 16

A student wants to express how he spends his money weekly with a graph. Which type of graph should he utilize?

Accepted Answer

Circle/Pie graph

Question 17

2.0 mL (milliliter) converts to how many deciliters?

Accepted Answer

0.02 dL

Question 18

Answer to the appropriate number of significant figures: 23.7 x 3.0

Accepted Answer

90.

Question 19

information recorded from observing a plant that grows 3 cm over a two-week period results in

Accepted Answer

data

Question 20

What is 0.775 x 10 ^ -1 in standard notation? (Remember sig fig rules and that ^ means to the power of )

Accepted Answer

0.0775

Question 21

Which is NOT a unit of measurement in the International System of Units, or SI?

Accepted Answer

ounce

Question 22

How many significant figures are present in the number: 701.

Accepted Answer

3

Question 23

0.225 km (kilometer) convers to how many meters?

Accepted Answer

225 m

Question 24

A theory

Accepted Answer

may be revised or replaced

Question 25

What is the equation for density?

Accepted Answer

mass (g) / volume (ml)

Question 26

Which of the following is an example of a correct qualitative observation?

Accepted Answer

the graduated cylinders holds liquid

Question 27

What is (4.0 x 10 ^ 5) / (1.6 x 10 ^ 3)? (Remember sig fig rules and that ^ means to the power of)

Accepted Answer

2.5 x 10 ^ 2

Question 28

The temperature at which an alligator’s egg is incubated will determine the gator's gender. Independent variable?

Accepted Answer

the temperature

Question 29

Which of the following is NOT a way that scientists generate hypotheses?

Accepted Answer

using a feeling about what should occur

Question 30

The temperature at which an alligator’s egg is incubated will determine the gator's gender. Dependent variable?

Accepted Answer

the gender of the alligator

Question 31

The ability to reproduce results is an important part of any

Accepted Answer

experiment

Question 32

All things in an experiment that must be the same to make it fair are called

Accepted Answer

controlled variables

Question 33

How many significant figures are present in the number: 0.0000070

Accepted Answer

2

Question 34

What is (9 x 10 ^ 5) - (6 x 10 ^ 4)? (Remember sig fig rules and that ^ means to the power of)

Accepted Answer

8.4 x 10 ^ 5

Question 35

What grade do you think you will get on this exam?

Accepted Answer

C, B, A

Question 36

Which of the following is NOT a goal of science?

Accepted Answer

to use data to support a particular point of view

Question 37

In an experiment, the one group that is NOT changed is called the

Accepted Answer

independent variable, control group

Question 38

Scientific hypotheses must be proposed in a way that

Accepted Answer

enables them to be tested.

Question 39

What is (7 x 10 ^ 8) x (9 x 10 ^ 6)? (Remember sig fig rules and that ^ means to the power of)

Accepted Answer

6.3 x 10 ^ 15

Question 40

The correct order for common metric prefixes are

Accepted Answer

Kilo, Hecto, Deca, base unit, deci, centi, mili

Question 41

In an experiment, the factor that is manipulated is called the

Accepted Answer

independent variable

Question 42

The basic unit of MASS in the International System of Units, or SI, is the

Accepted Answer

gram

Unit 0 Exam

Questions 42

Unit 0 Exam

Questions 42