7th Grade Science - Semester 1 Exam Study Guide

What form of energy is stored in a stretched rubber band?

• Kinetic energy

• Thermal energy

• Potential energy

• Magnetic energy

Tags

NGSS.MS-PS3-2

What determines the strength of magnetic interactions between two magnets?

• The shape of the magnets

• The distance between the magnets

• The color of the magnets

• The material surrounding the magnets

Tags

NGSS.MS-PS2-3

Can energy be transferred between objects?

• No, energy is fixed

• Yes, but only under certain conditions

• No, it remains constant within the object

• Yes, but only through heat

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

What happens to the magnetic field strength as distance increases?

• It increases

• It decreases

• It stays the same

• It fluctuates randomly

Tags

NGSS.MS-PS2-3

What happens when a magnet is moved closer to a coil of wire in a generator?

• The magnetic field weakens

• The current in the wire increases

• The generator stops working

• The wire heats up

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

NGSS.MS-PS3-5

How does the type of magnet used in a generator affect electricity production?

• It determines the amount of current produced

• It has no effect on electricity production

• It changes the direction of current flow

• It only affects the durability of the generator

What happens to the electricity produced if the magnets are moved faster in a generator?

• The electricity decreases

• The electricity stays the same

• The electricity increases

• The generator stops working

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which orientation of two magnets causes the strongest magnetic interaction?

• North pole to north pole

• South pole to south pole

• North pole to south pole

• Side by side

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the relationship between distance and magnetic force?

• Magnetic force increases with distance

• Magnetic force decreases with distance

• Magnetic force remains constant

• Magnetic force depends on the material

Tags

NGSS.MS-PS2-3

Give an example of potential energy being transformed into kinetic energy.

• A rock resting on a hill

• A stretched rubber band snapping

• A magnet attracting another magnet

• A generator producing electricity

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4