SPS5 Forces Review

SPS5 Forces Review

Multiple Choice

What keeps the planets in orbit around the sun?

• gravity

• friction

• density

• distance

Multiple Choice

A person would weigh less on on the Moon than on the Earth because . . .

• Moon has more mass, and therefore more gravity
• Moon has less mass, and therefore more gravity
• Moon has more mass, and therefore less gravity
• Moon has less mass and therefore less gravity

Multiple Choice

Which model has greater gravitational attraction (if any)

• Model A
• Model B
• Both Model A and Model B (same gravity)

Multiple Choice

Which of the following will not change in different gravitational fields?

• weight
• force
• mass
• pounds

Multiple Choice

Which statement about gravity is true?

• gravity causes objects to pull towards one another

• gravity causes objects to push away from each other

• gravity only takes place between planets

• the moon doesn't have any gravity

Multiple Choice

When will the forces of gravity between two objects be the GREATEST?

• when the masses of both objects are small and the objects are far apart

• when the masses of both objects are large and the objects are close together

• when the masses of both objects are small and the objects are close together

• when the masses of both objects are large and the objects are far apart

Multiple Choice

What two things determine the gravity of an object?

• mass & weight

• mass & distance

• density & mass

• volume & distance

Multiple Choice

A brick and a pencil are dropped at the same time from the same height. Which one would hit the ground first?

• brick

• pencil

• both would hit at the same time

Multiple Choice

What happens when two north poles of a magnet are placed together?

• they repel
• they attract
• they cancel each other out
• the strength of the magnet is doubled

Multiple Choice

This large crane magnet functions only when the electrical current is ON.  The crane magnet is an example of what type of magnet?

• NIB Magnet
• Ceramic Magnet
• Electromagnet
• funnel magnet

Multiple Choice

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

Multiple Choice

When two magnets repel, they ________________

• change color
• pull together
• push apart
• get colder

Multiple Choice

Where is the force of attraction the strongest on a magnet?

• at the poles

• in the middle

• above the magnet

• below the magnet

Multiple Choice

Where is the force of attraction the strongest on a magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

Multiple Choice

Which is NOT an insulator.

• Wool
• Plastic
• Iron
• Glass

Multiple Choice

What is the BEST example of a conductor? 

• A wooden block
• A ceramic mug
• A glass cup
• A metal bowl

Multiple Choice

What is a conductor?

• a material that slows the transfer of heat
• a material that transfers heat easily
• a material that is fluffy
• a material that is temperature controlled

Multiple Choice

What is a insulator?

• a material that slows the transfer of heat
• a material that transfers heat easily
• a material that is fluffy
• a material that is temperature controlled

Multiple Choice

These are examples of

• Conductors

• Insulators

Multiple Choice

These are examples of

• Insulators

• Conductors

Multiple Choice

When a plastic rod is rubbed with wool, the wool acquires a positive charge because

• protons are transferred from the wool to the rod
• protons are transferred from the rod to the wool
• electrons are transferred from the rod to the wool
• electrons are transferred from the wool to the rod

Multiple Choice

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

• the plastic strip acquired extra protons from the cotton.

• the plastic strip acquired extra protons from the charging process

• protons were created as the result of the charging process

• the plastic strip lost electrons to the cotton during the charging process

Multiple Choice

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

• the plastic strip acquired extra protons from the cotton.

• the plastic strip acquired extra protons from the charging process

• protons were created as the result of the charging process

• the plastic strip lost electrons to the cotton during the charging process

Multiple Choice

How can a neutral object become charged?

• by being dipped in water

• by being stuck to the desk with tape

• by allowing gravity to work on it

• by having electrons added or removed

Multiple Choice

What is the device seen here?

• generator
• electric motor
• electromagnet
• magnet

Multiple Choice

A coil of wire spinning around a magnet or a magnet spinning around a coil of wire can form___

• a permanent magnet
• an iron core
• a turbine
• an electric current

Multiple Choice

This object transforms mechanical energy into electrical energy

• Circuit
• Generator
• Motor
• Battery

Multiple Choice

Electric currents produce _____________

• electron clouds

• magnetic fields

• sound waves

Multiple Choice

When _______________ travels through a

conductor, a magnetic field is created

• current

• a magnetic field

• neutrons

Multiple Choice

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.

• Use a smaller battery.

• Reverse the poles of the magnet.

• Remove all the coils and the nail.

Multiple Choice

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.

• Use a smaller battery.

• Reverse the poles of the magnet.

• Remove all the coils and the nail.

Multiple Choice

If I add more light bulbs to a series circuit what happens?

• The current speeds up and the lights get brighter

• The current slows down and the lights dim lower

• The current speeds up and the lights dim lower

• The current slows down and the lights get brighter