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WorksheetsUnit 1 Review
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
Kristin uses straws to build a bridge. She is using a...
a)
variable
b)
hypothesis
c)
theory
d)
model
2.
What kind of data does spotting 6, 10, 7, 14, and 13 birds represent?
a)
inferred observation
b)
qualitative observation
c)
quantitative observation
d)
classified observation
3.
Raul and Mark ran on very hot days, but Tony ran on a cool day. What affected the results.
a)
dependent variable
b)
experimental bias
c)
cause and effect
d)
independent variable
4.
Objective thinking means drawing conclusions based on...
a)
personal feelings
b)
available evidence
c)
what you are told
d)
rumors
5.
Which of the following is true about scientific knowledge?
a)
never changes,new evidence is discarded if opposite of known
b)
collection of facts open to new evidence and interpretations
c)
based mostly on opinions and beliefs
d)
voted on every year to see what is taught in books
6.
Which of the following is most likely to change scientific knowledge?
a)
more expensive experiments
b)
improved methods for conducting opinion polls
c)
more links added to the internet
d)
new data or interpretations of the natural world
7.
What is the independent variable in the experiment shown?
a)
The presence of flies.
b)
the size of the jar
c)
the presence of meat
d)
whether the jar is covered or not
8.
How should you usually control variables in an experiment?
a)
changing only the 1 variable you want to study
b)
theorizing as you carry out your experiment
c)
hypothesizing as you carry out your experiment
d)
changing all the variables you can control
9.
What do scientists do to ensure their investigations can be repeated & obtain the same results?
a)
write everything in code
b)
keep accurate and detailed records
c)
keep their results secret
d)
publish their hypotheses on the Internet
10.
The density of an object is...
a)
its mass divided by its length
b)
its volume divided by its mass
c)
its mass divided by its volume
d)
its mass multiplied by its volume
11.
Kelvin is the basic SI unit of...
a)
length
b)
energy
c)
temperature
d)
weight
12.
A ruler measures...
a)
mass
b)
length
c)
volume
d)
density
13.
What does a graduated cylinder measure?
a)
mass
b)
length
c)
volume
d)
density
14.
What does a triple beam balance measure?
a)
mass
b)
temperature
c)
volume
d)
length
15.
Mass and weight are different because...
a)
mass is the measure of the force of gravity acting on object
b)
the mass of an object would be different on the moon
c)
weight is the measure of force of gravity acting on object
d)
the weight of an object is constant or remains the same
16.
The precision of a measurement refers to...
a)
how close measured values are to each other
b)
how good a feeling there is about the measurement
c)
how close measured value are to true or accepted value
d)
how careful he is in making measurements
17.
Approximate values are called...
a)
caluculations
b)
guesses
c)
estimates
d)
assumptions
18.
What is median mass measurement: 1.3, 2.0, 4.1, 4.9, 5.7, 5.9, 6.0, 6.4, 7.2 grams?
a)
4.1 grams
b)
5.7 grams
c)
4.9 grams
d)
5.9 grams
19.
What is the mode of 15, 17, 22, 13, 15, 26, 19
a)
15
b)
26
c)
17
d)
13
20.
What is the mean of 8, 12, 6, 5, 10, 7?
a)
7
b)
8
c)
48
d)
5
21.
What is the range of a fish who dies if the temperature is lower than 10oC or higher than 27oC?
a)
10oC
b)
27oC
c)
17oC
d)
37oC
22.
Which type of graph is most useful for showing the growth of a dog over time?
a)
bar graph
b)
pie graph
c)
line graph
d)
circle graph
23.
Why is a line graph a useful tool for representing data? It shows...
a)
the car travels at different speeds at different times
b)
the speed of the car by relating distance and gas mileage
c)
that the car can go up hills
d)
the speed of the car by relating distance and time
24.
What is the volume of a box that is 6 cm wide, 7 cm long, and 2 cm high?
a)
42 cm2
b)
84 cm3
c)
48 cm3
d)
84 cm2
25.
Which of the following is an example of a qualitative observation?
a)
13 girls in class
b)
bird has red feathers
c)
four dogs at the vet
d)
Dave is 5 feet, 8 inches tall
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