Which of the following are ways to measure movement?
Prediction, time, speed
Direction, distance, speed
Direction, time, prediction
Distance, time, speed
A force that happens when an object rubs another object is called ____________
Gravity
Friction
Magnetism
A child pushes a box around the room. (This is an example of ______________.)
Balanced forces
Potential energy
Unbalanced forces
Chemical energy
Cooper designs and builds a toy car and is about to test the speed of the car bay pushing it down a ramp. What tools should he use to measure the speed of the toy car?
A ruler and a scale
A stopwatch and a ruler
A measuring cup and a scale
A scale and a stopwatch
Balanced forces cancel each other out when acting on an object.
True
False
Hitting a nail with a hammer is a _____________.
Strike
Push
Pull
Crash
A force is a ___________________.
Push or a pull
A pull between two objects
Pushing
The amount of gravity between two objects
_________________ forces act on an unmoving object.
Unbalanced
Balanced
An object will have a change in motion when the forces acting on it are __________________.
Not equal
Equal
__________________ is necessary to move a car compared with a bicycle.
No force
More force
The same force
Less force
Objects can only move on a straight line.
True
False
Motion is the process of change in an objects ______________.
Position
Movement
Distance
Speed
Two children are holding one end of a rope each. They pull on the rope in opposite directions. The rope is not moving. What conclusion can be made about the forces that the children apply on the rope?
Forces are balanced. Children have same amount of strength.
Jacob is walking a small dog and a big dog. Suddenly, both dogs pull on opposite directions. Which direction will Jacob be pulled?
Towards the smaller dog
In the opposite direction of the dog that applies more force
Towards the dog that applies more force
Towards the bigger dog
The forces that make an object move are called __________________ forces.
Unbalanced
Balanced
Some kids played racing three toy cars. Each one started at the same time. The following drawing shows the end of the race.
Car A
Car C
All had same speed.
Car B
