Forces
Motion
Speed
Investigations
100
A push or a pull that causes an object to move, stop, change direction, or change shape
force
100
When an object is moving, it has this type of energy
kinetic
100
When an object is slowing down, this is called _____________________.
deceleration
100
Georgia wants to know if her new remote toy car will travel faster on the driveway or in the grass. What is the independent variable in her investigation?
the surface (driveway vs. grass)
200
Which of these is an example of a force?
color, size, shape, push
push
200
When an object has stored energy, it is called _______________ energy
potential
200
When an object is speeding up, this is called _________________.
acceleration
200
Oliver is at a water park and wants to race down the big slide. He thinks he will finish faster than his dad who weighs about 150 lbs. more than him. What is the dependent variable in this investigation?
the time it takes to get down the slide
300
Which force pulls objects toward the Earth?
gravity
300
When two objects collide, energy is _______________ from one object to another.
transferred
300
An object's speed and direction is called _______________.
velocity
300
When rolling different marbles down a foam roller coaster track, you discovered that the lighter marble usually traveled faster. What is the independent variable in this investigation?
the weight of the marbles
400
A force that opposes motion, causing it to slow down or stop
friction
400
In order to make something move, a _____________ must be applied.
force
400
What could you do to decrease the speed of a toy car going down a ramp?
-make the ramp shorter
-make the toy car heavier
-add friction to the ramp
400
Uriel wants to see if a ball will bounce higher if he drops it from a higher location. He drops the ball at 3 feet, 6 feet, and 10 feet, and measures the height of the bounce each time. What are two things he should keep constant in his investigation?
the ball and the surface he drops it on and the force of the drop
500
Each of these boys are pulling with the force of 10 newtons. Are the forces balanced or unbalanced? What will happen?
The boy in blue will win.
They will not move at all.
The boy in red will win.
balanced - they will not move at all
500
Which of these best describes motion?
A) a change in an object's position over time
B) staying in the same place
C) a push or pull without movement
D) the weight of an object
A) a change in position over time
500
A small car accelerates faster than a big diesel truck. Explain why.
The small car has less mass and takes less force to move.
500
Lucian wants to see if a bigger magnet will have more magnetic force than a smaller magnet. He tests to see how many papers each magnet will hold on his fridge. What is the dependent variable in this investigation?
the force of the magnets, how many papers they hold