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SCIENTIFIC METHOD
SCIENTIFIC METHOD
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Scientific method
Flashcards
28 cards
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Answers
1
What will a scientist most likely do next after asking a testable question?
make a prediction
perform an experiment
analyze results
communicate results
2
In a controlled experiment:
a control group is compared with an experimental group
there are at least two variables
all variables should be different
a variable is not needed
3
To test a new medication, group 1 gets medicine, group 2 gets a sugar pill. The 2nd group is:
the constant
the control
the independent variable
the dependent variable
4
All measurements contain a number and a?
unit
label
multiple
expression
5
Different fertilizer is given to 3 identical plants to test growth What would improve the test?
Use only one type of fertilizer
Include a plant that is given only water
Use three different types of plants
Include a plant that is not given any fertilizer
6
Which graph would be best to show square miles of deforested land in different years?
flow chart
bar graph
venn diagram
pie chart
7
Why might a scientist reject a scientific theory?
It is too old
It covers too broad a topic
New evidence contradicts it
Some people disagree with it
8
Which tool will a scientist use to compare the mass of 2 rocks?
a triple beam balance
a graduated cylinder
a test tube
a microscope
9
Which stage of the scientific inquiry process allows scientists to evaluate each other's work?
experimenting
communicating
concluding
hypotheszing
10
If you are testing how sunlight affects plant growth, what will be the dependent variable?
The soil the plant grows in
The size of the container
that amount of light the plant receives
The height the plant grows
11
To determine the volume of a block of wood, which piece of equipment will be used?
thermometer
meter stick
spring scale
balance
12
Students testing rockets have models with various nose cone shapes, what question is tested?
What is the effect of both the fin shape & the nose cone?
What is the effect of the overall design?
What is the effect of the nose cone shape?
What is the effect of redesigning more than one rocket?
13
To create a graph showing number of cricket chirps heard at different temperatures:
x=number of chirps, y=number of crickets
x=number of crickets, y=temperature
x=number of crickets, y=number of chirps
x=temperature, y=number of chirps
14
Which is a reason scientists do multiple trials?
The scientists wants to test another variable
1 trial doesn't provide enough data to support a prediction
To get results that match the prediction
There are materials left over
15
A microscope's objective lens is 10X and its eyepiece is 10X. What is the magnification?
1x
100x
1000x
10x
16
How do you calculate the density of an object?
divide its mass by its length
divide its volume by its mass
multiply its mass by its volume
divide its mass by its volume
17
To determine if the height of a ramp affects the speed of a cart when it rolls down, you would
add more mass to the cart and retest
repeat the same test several times
use different types of wheels
test using different ramp surfaces
18
What is the volume of a box that measures 5cmx3cmx2cm?
30 cubic centimeters
10 cubic centimeters
10 centimeters
30 centimeters
19
What system of measurement was adopted by the world wide scientific community in 1960?
The Scientific Measurement of Units
The New Standard System of Measurement
The Uniform Standards of Measurement
The International System of Units
20
What equipment would be used to find the density of an irregularly shaped object?
balance & test tube
test tube & metric ruler
graduated cylinder &spring scale
graduated cylinder & balance
21
Which type of variable is observed or measured?
controlled
dependent
independent
refined
22
You notice how a seed's structure helps it float in the air. What inference cannot be made?
Seeds have structures that carry them away from the parent
All seeds are moved away from the parent by wind
Seeds can move farther for the parent on a windy day
Some seeds are moved away from the parent by wind
23
What's it called when you form a possible explanation for an observation based on experience?
inference
conclusion
constant
variable
24
Which is an example of a qualitative observation of an object?
width
height
area
shape
25
Which type of graph would be best to show plant growth with different types of fertilizers?
line plot
stem and leaf
bar graph
line graph
26
A student notices that water boils at a higher temp when salt is added? What's the prediction?
adding sugar will lower the boiling point
adding salt will raise the boiling point
adding salt will lower the boiling point
adding sugar will maintain the boiling point
27
If testing the affects of gasoline additive on mileage, which fuel is in the control car?
2 parts gasoline & 1 part additive
only gasoline
1 part gasoline & 1 part additive
only additive
28
Which is NOT true of scientific theories?
They support a wide range of hypotheses
They are based on the best evidence available
They cannot be changed
They have been supported by testing
