Question

If Mr. Jones was moved from Earth to the moon, what would change?(3 points)

hair color

weight

height

mass
Which of the following has the greatest potential energy? (3 points)

a 5 kg squirrel in the middle of the tree trunk

a 10 kg eagle's nest full of eggs at the top of a tree

a 15 kg cat at underneath the tree

a 10 kg bird below the squirrel
The faster an object moves the _____________ kinetic energy it has. (3 points)

not enough information

less

same

more
A(n) is created by passing current through a coil of wire wrapped about an iron core. (3 points)

electromagnet

motor

generator

permanent magnet

Answer 1

1. Weight — gravity is weaker on the Moon, so his weight would change; mass (and hair color, essentially) would not.

2. a 10 kg eagle's nest full of eggs at the top of a tree — gravitational potential energy is mgh, so the object with substantial mass at the greatest height has the most PE.

3. more — kinetic energy increases as speed increases.

4. electromagnet — a coil of wire with current around an iron core produces an electromagnet.