Motion & Stability 2

What are lines around a bar magnet spread out from one pole and curve around to the other?

• Compass Lines

• Magnetic Lines

• Pole Lines

• Magnetic Field Lines

What does every magnet have?

• Two magnetic poles

• Two colors

• Space between compasses

• Front & back

What areas of a magnet have the strongest magnetic effect?

• the middle
• the poles
•  the sides
• the magnetic field lines

Magnetic poles that are unlike ________and magnetic poles that are alike ___________.

• run; stay
• attract; repel
• stay; repel
• repel; attract

What is a magnetic field?

• purple lines with arrows
• area of magnetic force around a magnet
• it's like a really big football field
• area of a magnet around a magnetic force

How would using a stronger ferromagnetic material for the core help an electromagnet's field?

• It would decrease the strength of the electromagnetic field

• It would keep the strength of the electromagnetic field the same

• It would increase the strength of the electromagnetic field

• It wouldn't affect the strength of the electromagnetic field

What does an electric current produce?

• Magnet

• Electricity

• Magnetic Field

• More Electricity

What is affected by mass and distance?

• Gravity

• Weight

• Speed

• Time

Which word means how hard it is for electrons to flow?

• Current
• Voltage
• Resistance
• Power

What is current measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)