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WorksheetsSTAAR Blitz Category 2- Science
Total questions: 55
Worksheet time: 28mins
This illustration shows an example of energy changing forms. Which changes in energy form are illustrated in the diagram?
electrical - sound - light and mechanical
sound - mechanical - light and energy
mechanical - light - sound and electrical
light - electrical - mechanical and sound
At which position does the boulder have the greatest kinetic energy?
A
B
C
D
Which energy transformation is best shown in this diagram?
heat to mechanical
mechanical to light
sound to heat
heat to sound
What is the original source of energy for all these activities?
oil
gas
sun
water
Which process is primarily responsible for the transfer of heat indicated by the arrows in the beaker of water?
conduction
convection
radiation
condensation
Why does student B have more potential energy than student A.
Student A is bigger than student B
Student A is closer to the pool
Student B is closer to the sun
Student B won't jump because he's too scared
Which graph shows an object slowing down?
A
B
C
D
A person uses a bow to shoot an arrow at a target. In which diagram does the bow and arrow have the greatest amount of potential energy.
A
B
C
D
If the unequal opposing forces are applied to the cart at the same time, what will occur?
The cart will move to the left
the cart will move to the right
the cart will alternate between moving left and right
the cart will remain stationary
In which diagram would the block of wood have the greatest acceleration?
A
B
C
D
Which car traveled at an average speed of 20 km/h?
A
B
C
D
Which object would have the greatest force?
a 5 kg object accelerating at 10 m/s2
a 5 kg object accelerating at 20 m/s2
a 20 kg object accelerating at 4 m/s2
a 20 kg object accelerating at 3 m/s2
If the force used to push a shopping cart increases, the cart's acceleration will
decrease
increase
stay the same
Four boxes are sliding with constant speed before each box experiences an unbalanced force of 8 N. Which box would experience the greatest acceleration when the unbalanced force is applied?
the box with a mass of 2 kg
the box with a mass of 4 kg
the box with a mass of 6 kg
the box with a mass of 8 kg
The picture shows and aerialist walking on a tightrope and holding a balancing bar. An action-reaction pair of forces exists between -
the aerialists' feet and the rope
the rope and the balancing bar
the two ends of the rope
the aerialists' arms and legs
The unusual strength of a glue makes it able to hold a heavy object, or load, as shown in the diagram. If the load exerts a strong downward force, the glue
destroys the force
exerts a stronger force
causes the load to accelerate upward
exerts an upward force that is equal to the downward force
A meteor moving 468 km per minute traveling in a south - to - north direction passed near Earth in 2013. Because the meteor was only 45 m wide and was 27,700 km above Earth's surface, it was not visible without the aid of a telescope. Which statement describes the meteor's motion?
its velocity was 7.8 km/s northward
its acceleration was 468 km/s2
its speed was 468 km/s northward
its acceleration was 7.8 km/s2
Which of the following best describes the velocity of an object?
50 m/s
50 m east
50 m/s east
50 m/s2
The pickup truck has a changing velocity because the pickup truck -
can accelerate faster than the other two vehicles
is traveling in the opposite direction from the other two vehicles
is traveling on a curve in the road
needs a large amount of force to move
The teacher asked the class to calculate the acceleration of the crate based on the crate's mass and the force she applied. What conclusion can be made about the difference between the calculated acceleration and the actual acceleration that occurred in the trials.
another force in the direction of the motion produced a lower acceleration than calculated
an opposing force caused by friction produced a lower acceleration than calculated
another force in the direction of the motion produced a higher acceleration than calculated
an opposing force caused by friction produced a higher acceleration than calculated
A 1,100 kg car comes uniformly to a stop. If the vehicle is accelerating at -1.2 m/s2, which force is closest to the net force acting on the vehicle?
-9,600 N
-1,300 N
-900 N
-94 N
Which of these best describes why the leaf fell in a crooked path instead of straight down?
Objects with irregular shapes never fall in straight lines
Air currents and gravity applied changing and unbalanced forces to the leaf
The upward force of the air on the leaf was the greater than the downward force of gravity
Once the leaf was in motion, it continued moving in the same directions because the forces were balanced
An archer shot a 0.06 kg arrow at a target. The arrow accelerated at 5,000 m/s2 to reach a speed of 50.0 m/s as it left the bow. During this acceleration, what was the net force on the arrow to the nearest newton?
3 N
33 N
300 N
833 N
A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2,000 m/s2. What is the net force, to the nearest newton, that accelerates the ball?
1000 N
100 N
40,000 N
10 N
If the force of friction resisting the student's push is 4 N, what is the net force acting on the board?
4 N
6 N
10 N
14 N
A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?
18 m/s2
6.48 m/s2
4.8 m/s2
6 m/s2
Four students push carts filled with sports equipment across the gym. Each student pushes with the same amount of force. Which of the following carts would have the greatest change in speed?
12 tennis rackets with a total mass of 10 kg
18 exercise mats with a total mass of 20 kg
15 sports balls with a total mass of 15 kg
28 pieces of rope with a total mass of 25 kg
What will happen if the force is changed to 35 N?
F
G
H
J
A
B
C
D
Some of the chemical energy in the natural gas transforms into thermal energy, which heats the water. Then some of the thermal energy changes into sound energy when the water forms steam and the steam leaves the kettle.
Some of the thermal energy in the natural gas transforms into sound energy when the water becomes hot. Then some of the sound energy changes into light energy when the kettle becomes warm.
Some of the electrical energy in the natural gas transforms into thermal energy, which causes the water to form steam. Then some of the thermal energy changes into sound energy and light energy when the steam leaves the kettle.
Some of the light energy in the natural gas forms into chemical energy in the water. Then some of the chemical energy changes into kinetic energy when steam leaves the kettle and into sound when the water boils.
?
A
B
C
D
?
A
B
C
D
?
A
B
C
D
When a lion eats a zebra and then uses the energy from the zebra to run, the lion's body converts
chemical energy to mechanical energy
electrical energy to chemical energy
chemical energy to light energy
mechanical energy to chemical energy
?
F
G
H
J
?
A
B
C
D
?
A
B
C
D
?
F
G
H
J
?
A
B
C
D
?
F
G
H
J
A block is pulled 0.5 m to the right in 2.5 s. What is the block's average speed?
0.2 m/s
5 m/s
1.5 m/s
2 m/s
?
F
G
H
J
?
F
G
H
J
A bus travels 25 km in 30 minutes. What is the average speed of the bus?
20 km/h
30 km/h
40 km/h
50 km/h
?
1.4 m/s
2 m/s
0.5 m/s
2.3 m/s
A student walks 4 km in 30 minutes. What is the student's average speed?
4 km/h
8 km/h
7 km/h
2 km/h
?
A
B
C
D
?
A
B
C
D
?
F
G
H
J
?
A
B
C
D
A car has a mass of 1,250 kilograms. What would be the net force needed to accelerate this car at a rate of 2.0 m/s2?
2,500 N
9 N
250 N
5 N
A baseball player hits a baseball. The mass of the ball is 0.15 kg. The ball accelerates at a rate of 60 m/s2. What is the net force on the ball to the nearest newton?
9 N
250 N
300 N
5 N
A motorcycle accelerates at a rate of 15 m/s2, and the motorcycle has a mass of 200 kg. What is the net force that accelerates this motorcycle?
30 N
3,000 N
50 N
40 N
A frog jumps from its position on a rock. The frog has a mass of 0.45 kilograms and accelerates at 3 m/s2. What is the net force that the rock is exerting on the frog?
1.35 N
3 N
15 N
9 N
Which of the following objects had the greatest force applied to it?
An object with a mass of 5 kg and an acceleration of 3 m/s2
An object with a mass of 11 kg and an acceleration of 1 m/s2
An object with a mass of 4 kg and an acceleration of 4 m/s2
An object with a mass of 2 kg and an acceleration of 5 m/s2
