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Ch 3 Review
Test Description: The Tools of Science - Sci Tech
Instructions: Answer all questions to get your test result.
1) The metric system of measurement is based on the number ________________.
A
100
B
12
C
1
D
10
2) If scientists cannot obtain exact numbers, they should rely on __________________.
A
guesses
B
the internet
C
other people's data
D
estimates
3) To determine how close to the true value an experimental value is, you use _______________________.
A
a precise calculation
B
percent error
C
significant figures
D
a median
4) The horizontal axis in a graph runs _________________.
A
diagonally
B
vertically
C
left to right
D
up and down
5) What are some reasonable safety precautions for field investigations?
A
Be prepared and use common sense
B
Always go in the field alone
C
Always wear an apron and goggles
D
None, there are no hazards in the field
6) What is the first thing you should do when there is an accident in the lab?
A
start first aid treatment
B
call the principal on the phone
C
run out of the room screaming
D
notify your teacher
7) The numerical average of data is _____________.
A
mean
B
range
C
median
D
mode
8) The difference between the highest and lowest value in a data set is ______________
A
median
B
range
C
mean
D
most
9) When do you use bar graphs when analyzing data?
A
Whenever you want
B
When you want it to be colorful
C
When comparing data
D
When looking for a change over time
10) How do you measure the volume of a rock?
A
on a scale
B
Water Displacement Method
C
on a balance
D
LxWxH
11) What is the unit for measuring mass?
A
pounds (lb)
B
centimeter (cm)
C
inches (in)
D
grams (g)
12) A high percent error in a measurement means ________________________
A
you measured perfectly
B
you were not very accurate
C
you were very accurate
D
you were wrong
13) When should you use a line grph to analyze your data?
A
When comparing data
B
When looking for change in data over time
C
Whenever you want
D
When you don't have colored pencils
14) How do you calculate density?
A
mass divided by volume
B
volume times mass
C
volume divided by mass
D
mass times volume
15) Why should measurements be accurate and precise?
A
So you can publish them in a science magazine.
B
So they are correct.
C
Because that's what my teacher says.
D
So that they are reliable.
16) What is the curve on the surface of water in a graduated cylinder called?
A
meniscus
B
estimate
C
water line
D
bubble
*select an answer for all questions
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