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Physical Science Chapter 1 Flashcards | StudBud
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Physical Science Chapter 1
Physical Science Chapter 1
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Review topics including the steps of the scientific method, variables, controlled experiments.
Flashcards
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Answers
1
Two cars on the same road, traveling in opposite directions, can have the same velocity.
False
True
2
If trying to get out of the way of a storm, knowing only the storms speed is required.
True
False
3
“10 m/s north” is an example of ____________.
Velocity
Speed
Acceleration
Position
4
Average speed and instantaneous speed are always the same.
True
False
5
Independent variables are...
what remains constant
what is changed
what is measured
6
How is speed calculated?
Time/speed
Time/distance
Distance/time
Speed/time
7
If a car is slowing down, that is a negative acceleration.
False
True
8
A merry-go-round horse travels at a constant speed but has a changing ________.
speed
accleration
velocity
direction
9
A speedometer tells you your instantaneous speed.
False
True
10
Which of the following would be a good METRIC unit representing speed?
mph
km/hr
mi/hour
km/s
11
What is a Scientific Law?
a fact about science
a tested explanation for how things work
what always happens under certain conditions
matter
12
Which unit measures speed?
Centimeters
Seconds
M/s
Meters
13
Which of the following best describes an object with acceleration = 0?
speeding up
turning
constant velocity
slowing down
14
In the example, what is the dependent variable?
the height of the plants
the fertilizer
the water
the plant
15
Which unit measures time?
Centimeters
Seconds
M/s
Grams
16
Dependent variables are...
what is tested
what is changed
what is measured
what remains constant
17
What is a Scientific Theory?
what always happens under certain conditions
a fact about science
matter
a tested explanation for how things work
18
Motion is a change in...
Speed
Position
19
In the example, what is the controlled variable?
the height of the plants
the fertilizer
the water
the type of plant
20
In the example, what is the independent variable?
the water
the plant
the fertilizer
the height of the plants
21
Acceleration is a c
hange of _______ over time (speed & direction)
Time
Velocity
Speed
Direction
22
Which unit measures Distance?
Meters (M)
M/s
Grams
mL
23
Acceleration can be negative and positive.
True
False
24
Which of the following is a proper unit of acceleration?
km/m/s/s2
m/s2
m/s
m/km
