9J Force Fields and Electromagnets

What is the correct definition for a force field?

• A deflective shield

• A space where a non-contact force has an effect

• A space where a contact force has an effect

• A region of space where there are no forces

Where is a magnetic field the strongest?

• In the middle

• At the farthest point the field reaches

• At the poles

• Just outside the the north magnetic pole

What type of magnet has a similar magnetic field shape as the Earth's?

• Horse shoe magnet

• Bar magnet

• Ring Magnet

• Circular Magnet

Which of the following materials is magnetic?

• Aluminium

• Zinc

• Iron

• Sodium

Any mass has a gravitational field

• True

• False

The gravitational field strength of Earth is approximately.....

• 1N/kg

• 10N/kg

• 100N/kg

• 10N/g

Weight (N) =

• Mass (g) x gravity (N/kg)

• Mass (kg) / Gravity (n/kg)

• Mass (kg) x Gravity (N/kg)

What 2 things can effect the force of gravity between 2 objects?

• Mass

• Temperature

• Colour

• Gravitational field strength

Static is caused by charged particles transferring from one insulator to another. What is the name of these charged particles?

• Protons

• Nucleus

• Neutrons

• Electrons

What name is given to the force when two insulators rub together?

• Gravity

• Upthrust

• Friction

• Air resistance