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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
1
B
12
C
100
D
10
2) If scientists cannot obtain exact numbers, they should rely on __________________.
A
other people's data
B
the internet
C
guesses
D
estimates
3) To determine how close to the true value an experimental value is, you use _______________________.
A
a precise calculation
B
significant figures
C
a median
D
percent error
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
Always wear an apron and goggles
B
None, there are no hazards in the field
C
Be prepared and use common sense
D
Always go in the field alone
6) What is the first thing you should do when there is an accident in the lab?
A
notify your teacher
B
run out of the room screaming
C
start first aid treatment
D
call the principal on the phone
7) The numerical average of data is _____________.
A
mean
B
median
C
mode
D
range
8) The difference between the highest and lowest value in a data set is ______________
A
mean
B
median
C
range
D
most
9) When do you use bar graphs when analyzing data?
A
When you want it to be colorful
B
When comparing data
C
When looking for a change over time
D
Whenever you want
10) How do you measure the volume of a rock?
A
Water Displacement Method
B
LxWxH
C
on a scale
D
on a balance
11) What is the unit for measuring mass?
A
grams (g)
B
centimeter (cm)
C
pounds (lb)
D
inches (in)
12) A high percent error in a measurement means ________________________
A
you were very accurate
B
you measured perfectly
C
you were not very accurate
D
you were wrong
13) When should you use a line grph to analyze your data?
A
Whenever you want
B
When looking for change in data over time
C
When you don't have colored pencils
D
When comparing data
14) How do you calculate density?
A
mass times volume
B
volume times mass
C
mass divided by volume
D
volume divided by mass
15) Why should measurements be accurate and precise?
A
So they are correct.
B
So you can publish them in a science magazine.
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
bubble
B
estimate
C
water line
D
meniscus
*select an answer for all questions
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