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Worksheets8thGrade_Physics
Total questions: 45
Worksheet time: 23mins
Name
Class
Date
1.
Copernicus is the first scientist to realize that …...
a)
the earth moves around the sun
b)
the sun moves around the earth
c)
the earth has gravity
d)
the sun is a part of the solar system
2.
When is an object in "motion"?
a)
When its position does not change relative to another object.
b)
When its position changes relative to another object.
c)
When it is lighter than other objects.
d)
When you get dizzy looking at it.
3.
A reference point is …
a)
a place or object used for comparison to determine if an object is in motion
b)
a place higher than the moving object.
c)
a place or object in the back of a moving vehicle.
d)
an invisible object used as a reference.
4.
The only star that does not change its position is ….
a)
the South Star
b)
the Giant Star
c)
the North Star
d)
the Sparkling Star
5.
If you can move as fast as the Earth's speed around the sun, you can go from NYC to LA in …..
a)
2 days
b)
2 seconds
c)
2 hours
d)
2 minutes
6.
The basic SI unit for length is …
a)
meter
b)
inch
c)
gram
d)
unit
7.
The suitable SI unit for measuring distances between cities is …
a)
mm
b)
km
c)
m
d)
cm
8.
The length of a pencil can be meaured by the SI unit ….
a)
mm
b)
km
c)
m
d)
cm
9.
The distance between San Francisco and Boston is about
a)
4300 mm
b)
4300 m
c)
4300 km
d)
4300 cm
10.
1 km = ? m
a)
1000.0
b)
100.0
c)
10.0
d)
10000.0
11.
The prefix milli- means
a)
one hundredth
b)
one thousandth
c)
one millionth
d)
one thousand
12.
The prefix kilo- means
a)
one hundredth
b)
one thousandth
c)
one millionth
d)
one thousand
13.
If you have 5 cars each is 5 meters long parked in a street after one another, what will be the total length of them?
a)
25 m
b)
25 km
c)
20 m
d)
2.5 km
14.
Speed =
a)
distance/time
b)
time/distance
c)
distance x time
d)
distance x unit
15.
Distance=
a)
km x distance
b)
Time/speed
c)
Speed/time
d)
Speed x Time
16.
Time=
a)
Speed/Distance
b)
Distance/Speed
c)
Speed x distance
d)
Speed
17.
An airplane flies at speed of 260 m/s which is equal:
a)
26 km/s
b)
2.6 km/s
c)
0.26 km/s
d)
260 km/s
18.
A cyclist moves at a speed of 10m/s, how long will it take the cyclist to travel 400 m?
a)
40s
b)
40m
c)
400s
d)
4s
19.
A car moves at a speed of 120km/ hour traveled for 3 hours, how many kilometers did the car travel?
a)
260 km
b)
360 m
c)
36km
d)
360km
20.
What is the average speed of a runner who ran two distances 3 km/0.5hr and 5km/1.5 hr?
a)
5km/hour
b)
6km/hr
c)
8km/hr
d)
4km/hr
21.
The velocity differs from speed in that ….....must be included in the velocity value.
a)
direction
b)
number of hours
c)
the units
d)
measurement
22.
When you graph a motion you put …...on the x axis.
a)
distance/time
b)
time
c)
distance
d)
time/distance
23.
When graphing motion the speed will equal to …
a)
point x,y
b)
the zero point
c)
the run/rise of the line
d)
the slope of the line
24.
The turtoise won the race over the hare because his …...was better
a)
average speed
b)
speed
c)
instantaneous speed
d)
cuteness
25.
Triathletes compete in three sports: swimming, biking and ….
a)
roller skating
b)
tennis
c)
running
d)
diving
26.
Average Speed is
a)
Total distance /total time
b)
total time/total distance
c)
total distance x total time
d)
total distance/2
27.
Instantaneous Speed is
a)
when an object stops at a given instant
b)
speed of a moving object at a given instant.
c)
a unit of time
d)
speed affected by gravity
28.
Speed in a given direction is called
a)
vocal
b)
speeding
c)
velocity
d)
stunt
29.
To know the "velocity" of an object you must know the speed and ?
a)
motion
b)
acceleration
c)
deviation
d)
direction
30.
To graph motion you plot ?
a)
distance versus time
b)
distance versus speed
c)
distance versus velocity
d)
time versus speed
31.
Slope of a straight line equals
a)
run/rise
b)
rise/run
c)
rise x2
d)
run x2
32.
When graphing motion if the slope equals zero this means that ?
a)
the object is running backwards
b)
the object stopped
c)
the object is running too fast
d)
the object is running at a constant rate
33.
The SI unit for speed is
a)
sec/m
b)
miles/hr
c)
inch/sec
d)
m/sec
34.
On a distance versus time graph, a straight line indicates that the objects speed is
a)
100 miles/hour
b)
m/sec
c)
zero
d)
one km/hour
35.
To describe an object's motion, you need to know its ----&----
a)
versatility and speed
b)
speed & direction
c)
speeding and velocity
d)
speed & timing
36.
A person ran 1000 m in 2.5 minutes what is his speed?
a)
400.0
b)
300.0
c)
500.0
d)
200.0
37.
On the distance versus time graph change is speed is shown by change in ?
a)
spotted
b)
line color
c)
slippery
d)
slope
38.
Using SI units the speed of 200 m/s is read
a)
200 meter per second
b)
200 miles per second
c)
200 meter bound second
d)
200 meter per hour
39.
This is NOT a SI unit
a)
second
b)
meter
c)
kilometer
d)
mile
40.
Acceleration is .....
a)
the rate at which velocity changes.
b)
the rate at which speed changes.
c)
the rate at which presure changes.
d)
the rate at which temperature changes.
41.
Acceleration includes changing .....
a)
speed only
b)
speed and direction
c)
direction only
d)
pressure and temperature
42.
Final Speed-Initial Speed/Time = .....
a)
speed
b)
timing
c)
acceleration
d)
velocity
43.
The boy pushing an elephant is trying to overcome ........friction.
a)
static
b)
rolling
c)
fluid
d)
sliding
44.
The bike tyres experience ...........friction.
a)
static
b)
rolling
c)
fluid
d)
sliding
45.
The Net Force here is ....
a)
55N
b)
5N
c)
10N
d)
Zero
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