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Unit Review

Total questions: 30

Worksheet time: 2hrs 35mins

Name
Class
Date
1.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
2.
What step does every scientific experiment begin with?
a)
hypothesis
b)
question/problem
c)
procedures
d)
conclusion
3.

What is an observation?

a)

A scientific statement based on ideas

b)

Using your senses to notice what is going on around you

c)

To be unaware of your surroundings

d)

The question that you want an answer to.

4.
This is the last step in the scientific method
a)
Draw a conclusion
b)
Record your data as results
c)
Share what you have learned with others
d)
Collaborate with others
5.
Testing a hypothesis often involves a(n):
a)
answer
b)
experiment
c)
problem
d)
safety check
6.
Observations made during an experiment are called:
a)
results
b)
problems
c)
conclusions
d)
questions
7.
Why would we use the metric system?
a)
It's based on the number 10
b)
Scientists, engineers, and the rest of the world uses it
c)
We are not used to it.
d)
Both a & b
8.

What is an observation?

a)

Something you measure or detect with your senses.

b)

The way you feel about something

c)

An educated guess

d)

A theory that has been disproved

9.

conclusion

a)

a collection of facts in a table

b)

an educated guess

c)

properties

d)

discussion of the results of an experiment

10.

Which of the following is NOT a characteristics of a hypothesis?

a)

Must be made with background knowledge

b)

Must be testable

c)

Must organizes the IV and DV

d)

Must always be correct

11.

Which best describes the purpose of a control sample?

a)

to compare its results to those of a well-known scientist

b)

to have more qualitative data to analyze at the end of the experiment

c)

to compare its results to those with the experimental sample

12.

When we test our hypothesis, there are two types of variables. What are they?

a)

Independent and controlled variable

b)

dependent and controlled variable

c)

independent and dependent variable

d)

none of the above

13.

Constants are factors in an experiment that stay the same. True or False?

a)

True

b)

False

14.

An independent variable is?

a)

step-by-step approach to solving problem

b)

a statement that can be tested

c)

variable measured during the experiment

d)

variable changed by the experimenter

15.
Dependent variable means
a)
the scientist controls what to test
b)
educated guess
c)
ask a question
d)
what is being measured
16.
40 cm = ______ mm
( 1 cm = 10 mm)
a)
4000
b)
40
c)
400
d)
None of the Above
17.

6 kg = _____ g

a)

6

b)

6000

c)

600

d)

.006

18.
200 mm = ____ cm
(1 cm = 10 mm)
a)
20 mm
b)
20 km
c)
20 cm
d)
20 dm
19.
Ed fills his sports bottle with 1 liter of water. After his bike ride, he drinks 200 milliliters of the water. How much water is left in Ed's sports bottle?
(1 liter = 1000 ml)
a)
800 mm
b)
8000 ml
c)
80 ml
d)
800 ml
20.
900 cm ____ 9000 mm
(1 cm is 10 mm)
a)
<
b)
=
c)
>
21.
Convert 17 m to cm:
(1 m = 100 cm)
a)
0.17 cm
b)
0.017 cm
c)
1,700 cm
d)
170 cm
22.
Convert 300 cm to m:
(100 cm = 1 m)
a)
3 m
b)
30 m
c)
0.3 m
d)
0.03 m
23.
Convert 300 meters to centimeters:
a)
3000 cm
b)
0.3 cm
c)
30,000 cm
d)
3 cn
24.
Convert 5 cm to mm:
a)
5,000mm
b)
0.5 mm
c)
0.05 mm
d)
50 mm
25.
490,000 g =____ kg
a)
490
b)
49
c)
4,900
d)
0.49
26.
Convert from meters to cm:  9 meters
a)
900 cm
b)
90 cm
c)
0.9 cm
d)
0.09 cm
27.
2804 mg = ___________ g
a)
0.2804
b)
2.804
c)
28.04
d)
280.4
28.
0.57 mL = ___________ L
a)
5.7
b)
0.057
c)
0.0057
d)
0.00057
29.
0.932 g = ___________ mg
a)
9.32
b)
93.2
c)
932
d)
9,320
30.
 1234 mg = ___________ kg
a)
0.0001234
b)
0.001234
c)
0.01234
d)
0.1234