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CMCSS Grade 8 Science 1st Semester Review Flashcards | StudBud
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CMCSS Grade 8 Science 1st Semester Review
CMCSS Grade 8 Science 1st Semester Review
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REVIEW #8thgradesciencetn
Flashcards
60 cards
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Questions
60
Answers
1
What is independent variable?
The variable that changes because of what you changed
The variable that changes on its own
The variable that stays the same
The variable you change on purpose
2
__________ do (does) not change based on how much matter is present.
Weight
Volume
Melting point and boiling point
Mass
3
An example of a chemical change is __________.
water boiling
candle wax melting
a window shattering
a car rusting
4
Something in an experiment that can change is called a
prediction.
hypothesis.
control.
variable.
5
Which of the following units do we use to measure the distance between two cities?
meter
millimeter
centimeter
kilometer
6
Ice melting is an example of a change of __________.
state
vapor
chemical property
physical property
7
True or False? In the Engineering Design Process, the steps often times repeat.
TRUE
FALSUE
8
What may a series of helpful variations in a species result in?
climatic change
fossils
adaptation
embryology
9
Which category is the largest in the organism classification system?
domain
genus
kingdom
species
10
What would
not
be needed to test the effect of rain on the growth of the grass?
a lawn with grass
magnifying glass
weather report
ruler
11
Which process allows clouds to form from water vapor in the air?
evaporation
condensation
sublimation
melting
12
What is not a possible sign of a chemical change?
color change
a change of state
light given off
heat given off
13
When sandpaper smooths a piece of wood, this is an example of a__________.
change of matter
chemical change
physical change
change of state
14
What is the mass of an object that has a density of 0.44 g/cm
3
and a volume of 25 cm
3
?
28 g
18 g
11 g
57 g
15
What is the fifth step of the scientific method?
Report findings
Make a hypothisis
Evaluate data and draw conclusions
Gather data
16
When you observe a physical property, the substance __________.
melts
changes
burns
does not change
17
A _____ is used to organize and summarize data in a visual way.
photograph
graph
table
drawing
18
What happens when biodiversity is lost in an area?
individuals adapt
species may go extinct
nothing
life goes on
19
When a piece of paper is crumbled, this is a change of __________.
state
shape
mass
density
20
How many variables should you test at one time in a experiment?
1
3
2
As many as needed to get the information
21
Which unit would be most appropriate to measure the length of a person's finger?
nanometers
kilometers
meters
centimeters
22
Color is a __________.
state of a substance
physical property
chemical property
chemical change
23
A ______ displays information in rows and columns.
drawing
table
photograph
graph
24
Relative dating allows scientists to find the age of a fossil by __________.
using radioactive elements in the fossil
comparing ages of the surrounding rock layers
unfreezing part of the fossil
dating the resin around the sample
25
Which of these is a tool used to identify organisms?
a stimulus
a dichotomous key
a hypothesis
a control
26
Report findings is what step of the scientific method?
2
5
7
3
27
What tool should be used to measure water volume?
test tube
graduated cylinder
ruler
beaker
28
An object's ________ depends only on the amount of matter in the object.
mass
volume
force
weight
29
Why would a company test a prototype for a new car?
To see if it looks good
To see if it will work
To see if it improves on the previous model
To see if people will buy it
30
Which is an example of bioengineering in farming?
using certain bugs to eat other bugs on plants
using pesticides to kill bugs
using manipulated DNA to make stronger plants
using herbicides to kill weeds
31
A banana browning in the air is an example of __________.
a physical change
a chemical change
a change of state
energy being released
32
During an experiment, a student found that plants don't need light. What may have happened?
Error in experimental procedurre
Bias in data interpretation
Wrong hypothesis
Wrong experiment
33
Where is the greatest source of biodiversity on Earth?
tundra
desert
rainforest
ocean
34
What is the process called when a solid changes directly to a gas?
condensation
boiling
sublimation
melting
35
What would happen to a cactus if it were placed in a rainforest?
it would die because it would get too hot
it would die because animals would eat it
it would die because it would not get enough sunlight
it would die because it would not get enough water
36
A ________ is made up of all the individuals of a group of related orders of plant or animal.
class
phylum
family
kingdom
37
Would roads be a intended benefit of cars?
No
Yes
38
Which property allows a pin to float on the surface of water?
surface tension
density
viscosity
specific heat
39
Would hearing loss be an unintended consequence of headphones?
No
Yes
40
A chemical change __________.
cannot be reversed easily
always can be reversed
never will change state
never can be reversed
41
What do we do when a hypothesis is not supported by the data in an experiment?
revise the hypothesis
state the problem
reanalyze the data
repeat the experiment many times
42
What is bias in science?
When you ignore data that doesn't support your hypothesis
When you create bad data during an experiment
When you ignore bad data
When you have an opinion
43
Mass and volume depend on the __________ of matter present.
chemical properties
flammability
physical properties
amount
44
Color and shape describe the __________ of matter.
chemical properties
chemistry
appearance
feel
45
Which steps can be repeated in the Engineering Design Process many times?
Make and test a prototype
Brainstorm and select an option
Test and refine a prototype
Identify a need and research
46
Which is an example of integrated pest management?
using special bugs to eat other bugs on plants
using pesticides to kill bugs
using bioengineering to make stronger plants
using herbicides to kill weeds
47
________ is a measurement of force.
temperature
volume
mass
weight
48
An example of a physical property is __________.
acidic
ability to rust
flammability
color
49
An odor being given off can indicate a __________.
physical change
change of state
chemical change
change of density
50
Which of these is true of scientific methods?
It is not important to form a hypothesis.
Data can be analyzed in only one way.
Conclusions are drawn at the beginning of theprocess.
The problem must be stated at the beginning ofthe process.
51
What does density measure?
volume per unit mass
weight per unit matter
matter per unit weight
mass per unit volume
52
When you observe a chemical property, the substance __________.
melts
burns
changes
remains the same
53
White mice live in a forest with a population of hawks. Which of these statements is true?
The population of white mice will most likelyincrease.
The population of hawks will most likely decrease.
The population of white mice will most likelydecrease.
The population of white mice will most likely staythe same.
54
Step 2 of the Engineering Design Process is...
Brainstorm solutions
Research
Refine prototype
Make a prototype
55
Which of the following describes the particles in a liquid?
changeable shape and volume
fixed shape and volume
fixed volume, changeable shape
fixed shape, changeable volume
56
What is the first step in the scientific method?
Make observations
Test hypothesis
Ask a question
Form a hypothesis
57
Change in inherited characteristics over time is called __________.
fossils
species
camouflage
evolution
58
An example of a chemical property is __________.
density
ability to burn
color
mass
59
Step 1 of the Engineering Design Process is?
Brainstorm solutions
Build prototype
Test prototype
Identify need
60
The amount of space an object occupies is its________.
length
mass
volume
weight
