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Worksheets8th grade STAAR WARS: Physics
Total questions: 49
Worksheet time: 1hrs 1mins
Name
Class
Date
1.
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
2.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
3.
Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
4.
What would the d-t graph look like for an object travelling at a constant velocity?
a)
Horizontal line
b)
Straight line
c)
Curved line
5.
What would the v-t graph look like for an object travelling at a constant velocity?
a)
Curved line
b)
Straight line
c)
Horizontal line
6.
when happened during the last second?
a)
slowing down
b)
moving backward and slowing down
c)
moving backward at a constant speed
d)
none of these
7.
which one is increasing?
a)
speed
b)
position
c)
time and speed
d)
time and distance
8.
At what time the object made a U-turn?
a)
5th second
b)
10th second
c)
25th second
d)
5th and 25th second
9.
when did the object stayed still?
a)
first 10 seconds
b)
first 20 seconds
c)
20th ~30th seconds
d)
30th~40th seconds
10.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
11.
what is friction?
a)
a force that causes uncontrollable slipping.
b)
a force that opposes the sliding motion between two touching surfaces.
c)
friction is a force for good
12.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
13.
Which has more Inertia? (so need more force to move)
a)
Truck
b)
Ant
c)
A cat
d)
A skateboard
14.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
15.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
d)
Density
16.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion.
d)
Friction
17.
After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving.
18.
If the force of gravity suddenly stopped acting on the planets they would
a)
spiral slowly toward the sun
b)
continue in their orbits for a short time
c)
move in straight lines tangent to their orbits
d)
fly straight away from the sun
19.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron?
a)
feathers
b)
iron
c)
same
d)
depends on their friction
20.
Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?
a)
first
b)
second
c)
third
d)
fourth
21.
Our balloon rocket experiment launched the balloon on the straw with air blowing out of the balloon and the balloon traveling in the opposite direction. Which of Newton's laws is this?
a)
first
b)
second
c)
third
d)
fourth
22.
If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
a)
2 m/s2
b)
4 m/s2
c)
16 m/s2
d)
10 m/s2
23.
The swimmer moves her hand down and to the left and her body goes forward to the right.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
24.
Pushing a child on a swing is easier than pushing an adult on the same swing.
a)
1st Law
b)
2nd Law
25.
A ____ force is the total force felt by an object.
a)
sum
b)
net
c)
strong
d)
balanced
26.
When the net force is zero, the forces on an object are balanced. True or false.
a)
true
b)
false
27.
Calculate the net force.
a)
5 N
b)
10 N
c)
45 N
d)
500 N
28.
What is kinetic energy?
a)
When an object is in motion
b)
When an object is not in motion
c)
all of the above
d)
none of the above
29.
What is potential energy?
a)
When an object is in motion
b)
When an object is not in motion
c)
all of the above
d)
none of the above
30.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
31.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
32.
What kind of energy is in gasoline in a car tank (car is not on)?
a)
Potential
b)
Kinetic
33.
What kind of energy is in basketball passing through the hoop?
a)
Potential
b)
Kinetic
34.
What kind of energy is in a battery?
a)
Potential
b)
Kinetic
35.
What kind of energy is in an acorn hanging from an oak tree?
a)
Potential
b)
Kinetic
36.
You pull your desk along the floor in your classroom. What does this statement best demonstrate?
a)
1. an alternative source of energy
b)
2. potential energy
c)
3. gravity
d)
4. work
37.
At which point is potential energy greatest
a)
W
b)
X
c)
Y
d)
Z
38.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases
c)
The kinetic energy decreases while the potential energy increases
d)
Bothe the potential energy and kinetic energy increase
39.
At which point is kinetic energy greatest
a)
W
b)
X
c)
Y
d)
Z
40.
When a pendulum swings, at which point is kinetic energy highest:
a)
1
b)
2
c)
3
d)
4
41.
When a pendulum swings, at which point is potential energy at its greatest
a)
1
b)
2
c)
3
d)
4
42.
Which example best represents potential energy
a)
Fire
b)
ice cream
c)
bouncing ball
d)
ocean waves
43.
Which type of energy does the battery produce?
a)
sound
b)
light
c)
mechanical
d)
electrical
44.
The glow sticks produce light for a short amount of time. The light from the glow stick is ____________.
a)
heat energy
b)
gravity
c)
magnetism
d)
chemical energy
45.
What form of energy comes from the sun?
a)
electrical
b)
mechanical
c)
chemical
d)
solar
46.
When you eat pizza, Chemical Energy is transferred to _____ Energy.
a)
Solar
b)
Electrical
c)
Mechanical
d)
Chemical
47.
Mechanical Energy is transferred to _____ Energy.
a)
Solar
b)
Mechanical
c)
Electrical
d)
Potential
48.
The Law of Conservation of Energy states that...
a)
energy can be destroyed
b)
energy can not be created or destroyed
c)
energy can only be destroyed using the force
49.
The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —
a)
solar
b)
light
c)
thermal
d)
mechanical
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