Moving Big Things 1
Moving Big Things 2
Moving Big Things 3
Moving Big Things 4
Moving Big Things 6
100
Identify the force acting on the mass that causes the spring to extend.
Gravity
100
Which type of energy is transferred from one object to another by simple machines?
Mechanical Energy
100
The person applies force to the lever to change the rock’s
position
100
Which simple machine is the person using? 
Lever
100
In which compass direction will both dogs most likely move?
east
200
The gravitational force between two objects is most affected by their what two factors?
mass and distance apart
200
The force of gravity pulling down on the barbell is 756 newtons (N). How many newtons of force are exerted by the weightlifter to hold the barbell up?
756 N
200
Which two simple machines are parts of the wheelbarrow?
a lever and a wheel and axle
200
What causes the balloon to move along the string?
force from escaping air
200
As a result of the change in the forces from time 1 to time 2, the bicyclist will
move faster in a forward direction
300
Which force will decrease if the surface of the ramp is made smoother?
Friction
300
If the unequal opposing forces are applied to the cart at the same time, what will occur?
The cart will move to the right
300
Which two simple machines are being used in the diagram?
inclined plane; wheel and axle
300
In which diagram would the block of wood have the greatest acceleration?
2
300
If the force used to push a shopping cart increases, the cart’s acceleration will
increase
400
The person using the track with the rollers uses less energy to load the box because the rollers reduce the
Force of Friction
400
In a car accident, a seat belt helps prevent injuries by applying a force
in the opposite direction of the passenger’s motion
400
Identify the force between the wheels of the cart and the ground surface that opposes forward motion of the cart. 
Friction
400
A student pushes against a tree with a force of 10 newtons (N). The tree does not move. What is the amount of force exerted by the tree on the student?
10N
400
A battery-powered cart pulls an 800-gram load across the floor. If the load were reduced to 400 grams, and the force used to move the cart remained the same, the cart would
move faster
500
Which statement best summarizes the scientific concept shown in the cartoon?
A body in motion will remain in motion unless influenced by an outside force.
500
Describe how gravity affects the path of the arrow after it has been released.
Gravity will cause the arrow to fall to the ground.
500
Describe one change that could be made to the lever to decrease the input force needed to lift the person.
Move the fulcrum closer to the person.
500
What force must the people overcome in order to lift the rock?
Gravity
500
How does the speed of train A compare to the speed of train B?
The trains are moving at the same speed.
600
State the general relationship between exercise and heart rate in humans.
If a person exercises, then the heart rate will increase.
600
Identify one change that could be made that would make the toy airplane fly at a different speed
- use a thicker/thinner rubber band
- turn the propeller more times
- change the mass/weight of the airplane
600
State one change the student could make, without changing the angle at which the bow is held, so that the arrow would travel a greater distance.
pull back more on the bow string (apply greater force)
600
Identify one force acting on the cart.
- Gravity
- Friction
600
What visual evidence observed by the passengers in either train lets them know that their train is moving in the direction indicated by the arrow?
The trees appear to move.
700
Where would the air of the balloon go if the student releases the inflated balloon.
Left
700
What would the motion of the balloon be when the student releases the inflated balloon.
to the right
700
Identify one way the students could have measured their heart rates.
use a heart monitor
700
Explain why the box may continue to move forward if the cart suddenly stops moving.
The box is not attached to the cart.
700
How would taping a coin (adding mass) to the balloon affect the overall motion of the balloon?
The balloon would not move as fast