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WorksheetsNewton's Laws, Electricity & Magnetism
Total questions: 30
Worksheet time: 2hrs 21mins
What is a scientific Law?
Check all the apply
Statements base on repeated experiments or observations.
Statements that explain why a phenomenon exists
Statements that describe or predict a range of natural phenomena
Statements that explain what will happen and why it will happen
How are speed and velocity different?
They are not different, velocity is how nerds say speed.
Velocity is measured in meters per second and speed is measured in miles per hour.
Speed is always positive, but velocity can be positive or negative because it has direction.
Speed is distance travelled divided by time. Velocity is how fast speed changes.
Which are of the following are considered acceleration?
Select all that apply
Acceleration is when an object speeds up.
Acceleration is when an object slows down.
Acceleration is when an object stops suddenly.
Acceleration is when an object changes direction.
What is force?
How hard it is to move something.
An interaction that can cause a change in an object's velocity when unopposed.
An energy field created by all living things that surrounds us and penetrates us and binds the universe together.
It's what gives a Jedi his power.
Which of the following will have the most momentum?
A 1,500 kg car traveling 20 m/s.
A 5 kg cannonball flying 100 m/s
A 9,000 kg single-axel semi truck rolling at 5 m/s
Which direction will the cart move when the men begin to pull?
To the left because it has the strongest guy.
To the right because it has more people pulling.
To the left because blue always beats red.
The cart will not move because equal force is being applied in each direction.
What is the sum of forces for this set up?
50 N to the left
50 N to the right
250 N to the left
250 N to the right
The skateboard and its contents are accelerating toward the orange bot. What force will the bot need to apply to balance the on-coming force? Use the formula F=ma to help you.
460 N
230 N
115 N
No amount of force will keep that bot from being flattened!
What did you learn from this simulation about the relationship between mass and top speed?
Mass and top speed are directly proportional, the more mass the faster the it can move.
Mass and top speed are inversely proportional, the more mass the more slowly it will move.
Mass and speed are related by acceleration (how long it takes to reach top speed), more mass will take more time to reach top speed.
Mass and speed are related by acceleration (how long it takes to reach top speed), more mass will reach top speed more quickly.
Newton's 1st Law is also called the Law of _____________.
Force
Momentum
Gravity
Inertia
True or False: Humans are the only animal that can blush
True
False
What is true about Newton's first law?
Select all that apply
Any object in motion will experience a decrease in velocity and eventually come to a stop.
An object at rest will stay at rest, unless acted upon by an unbalanced force
An object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force
An object at rest stays at rest because gravity is stronger than all other forces acting on it.
What are the four main types of friction?
Select all that apply
Sliding Friction
Rolling Friction
Fluid Friction
Static Friction
Newton's Second law (F=ma) tells us that mass and acceleration are inversely proportional. What does inversely proportional mean?
With constant force, when mass goes up acceleration will go down.
With constant force, when mass goes up acceleration will remain the same.
With constant force, when mass goes up acceleration will go up.
With constant force, when mass goes up acceleration will change directions.
How does a fish swimming through water demonstrate Newton's third law?
As the fish uses its fins to push water forward, it moves forward with the water.
As the fish uses its fins to push water backward, the water reacts by pushing the fish forward.
As the fish swims through the water it experiences fluid friction in an equal but opposite direction.
As a fish uses its fins to push the water, the water tries to resist a change in direction which pushes the fish forward.
What forces are acting upon the egg at this point in the demonstration of Newton's 1st Law?
Gravity
Friction
Air Resistance
Normal
Fill in the blanks: The egg does not fly forward with the cardboard because of _____________. The egg drops down because_______________ and the force of gravity remains.
Inertia, the normal force was removed
The normal force was removed, inertia
Gravity, Inertia
Use Newton's 2nd Law to calculate the acceleration due to gravity of the 2.2 kg bag of rocks sitting on this force plate. note: the force plate is reading 20.5 N
9.8 m/s/s
45.1 m/s/s
22.7 m/s/s
9.3 m/s/s
How does this demonstrate Newton's 3rd Law?
Note: The force plates read -129.1 and +130.6
Mrs. Conway is so strong she is sending Mrs. Clark's force plate into the negative.
It is impossible for two opposing forces to be equal.
The opposing forces are experimentally equal in magnitude with opposite direction -/+.
Because the opposing forces are not equal no one is moving.
Why was the friction greater when the hover-ball was turned off?
When the ball is hovering there is no friction, when it's not hovering it experiences static friction.
When the ball is on it experiences fluid friction from the air it pushes out, when it is off it experiences sliding friction which is a stronger force of friction.
When the ball is hovering it is experiencing fluid friction which is a stronger frictional force than the rolling friction it experiences when its dragging on the table.
When ball is on it experiences static friction and hovers. When the ball is off It has to overcome sliding friction to move.
This demonstration explained how to create an electromagnet.
What are the necessary components to make an electromagnet?
Select all that apply
A core composed of iron (or a similar non conducting) substance.
A strong magnet attached to a wired.
A copper (or similar conductive metal) wire looped around the iron core.
A current (such as from a battery) supplied to the wire.
True or False: Copper door knobs are self-disinfecting
True
False
This demonstration used a magnet to generate an electric current. The magnet was set in the center of a spool of copper wire. What needs to happen to generate the current.
Connect the magnet to a battery to supply a direct current.
Connect the ends of the wire to the magnet. The magnetic field will move from the north pole to the south pole, generating electricity.
Spin the magnet and the wire in the same direction at the same time to alternate an electric current.
Spin the magnet inside of the spool, to change the direction of the magnetic field and generate an electric current.
What determines the electric charge of an object or substance?
The number of protons and electrons.
The arrangement of the atoms within and object or substance.
Whether or not it is magnetic.
How much electricity you put into the object or substance.
How do charged objects interact?
Charged objects interact with other charged objects.
Charged objects only interact with neutral objects.
Opposites charges attract each other.
Like charges repel each other.
On a magnet, where is the magnetic field the strongest?
At the north pole.
At the south pole.
At both poles.
In the middle, between poles.
Why is iron able to form a stronger magnetic field than copper?
The atoms in iron are arranged so the charges all point in the same direction, causing the magnetic field lines to point in the same direction forming poles.
The atoms in iron are disordered allowing for the charges to interact and form a strong magnetic field.
Iron is a good conductor of electricity and electric currents produce magnetic fields.
Iron does not form a stronger magnetic field than copper. Copper forms the strongest magnets.
A single coil of wire carrying a current does not have a
very strong magnetic field.
How can you increase the strength of the magnetic field?
Select all that apply
Decrease the current flowing through the wire.
Uncoil the wire.
Increase the current flowing through the wire.
Increase the number of coils in the wire
What are the advantages of electromagnets?
They are both permanent and strong.
They are neither permanent nor strong.
They are not permanent, but they are strong.
They are permanent, but not strong.
True or False: Rabbits can throw up their food
True
False
