A positive charge will attract _____________________charge.
a neutral charge
another positive charge
a negative charge
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.
Opposites ________________.
attract
Which pair of balloons will repel each other?
A
C
B
Which would be attracted to a magnet?
an ice cube
a copper penny
a wax crayon
an iron nail
Motion is the process of change in an objects ______________.
Distance
Position
Speed
Movement
Electricity is an ______________ force.
visible
invisible
An object will have a change in motion when the forces acting on it are __________________.
Equal
Not equal
The forces that make an object move are called __________________ forces.
Unbalanced
Balanced
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 measuring cup and a scale
A stopwatch and a ruler
A scale and a stopwatch
A ruler and a scale
A child pushes a box around the room. (This is an example of ______________.)
Balanced forces
Potential energy
Unbalanced forces
Chemical energy
A magnet _________________ plastic bag.
does nothing to a
repels
atracks
A region of magnetic force around a magnet
pole
magnet
magnetic field
magnetism
A force is a ___________________.
A pull between two objects
Pushing
The amount of gravity between two objects
Push or a pull
Balanced forces cancel each other out when acting on an object.
True
False
All matter is made up _________________.
small particles with positive, negative, or neutral charge.
big particles everyone can see
A force that happens when an object rubs another object is called ____________
Friction
Gravity
Magnetism
One of two ends of a magnet.
magnetic field
magnet
pole
magnetism
Electricity can ___________ trough a wire and make things work.
stand
flow
fly
__________________ is necessary to move a car compared with a bicycle.
More force
No force
Less force
The same force
A magnet _________________ paper clips.
repels
attracks
Some kids played racing three toy cars. Each one started at the same time. The following drawing shows the end of the race.
Car B
All had same speed.
Car A
Car C
Which causes a shock when a person touches a doorknob?
static electricity
a broken circuit
electric current
insulated wires
An object with a force that can attract or repel certain materials.
magnet
magnetic field
magnetism
pole
_____________ have a negative charge.
neutrons
electrons
protons
Objects can only move on a straight line.
True
False
Same charges _________________.
attract
repel
A north pole will attract another magnet's _______________ pole.
north
south
_____________ have a positive charge.
electrons
neutrons
protons
_____________ have a neutral charge.
neutrons
electrons
protons
Which of the following are ways to measure movement?
Distance, time, speed
Direction, distance, speed
Direction, time, prediction
Prediction, time, speed
_________________ forces act on an unmoving object.
Balanced
Unbalanced
A material that is often affected by the push and pull of magnets.
magnet
metal
pole
magnetism
Hitting a nail with a hammer is a _____________.
Strike
Crash
Pull
Push
Jacob is walking a small dog and a big dog. Suddenly, both dogs pull on opposite directions. Which direction will Jacob be pulled?
In the opposite direction of the dog that applies more force
Towards the dog that applies more force
Towards the smaller dog
Towards the bigger dog
Which is an example of static electricity in nature?
lightning
waterfall
volcano
rain
the ability of an object to push or pull on another object that has the magnetic property.
pole
magnetic field
magnet
magnetism