Energy and Non-contact Forces

Batteries have energy in the form of _____ energy.

• chemical

• thermal

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-2

Chemical energy in a battery is transformed into kinetic energy in the form of ____ energy that flows through the copper wire.

• electrical

• thermal

As energy flows, ____travel through the wire and creates a magnetic force field.  

• electrons

• protons

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following best describes what happens to the force of attraction when the distance is decreased between a North pole and a South pole magnet?

• it increases

• it decreases

Tags

NGSS.MS-PS2-3

Opposites ___ and same poles ____.

• attract, repel

• repel, attract

Tags

NGSS.MS-PS2-3

How can you make an electromagnet stronger?

• decrease coils or reduce batteries

• increase coils or increase batteries

Tags

NGSS.MS-PS2-3

A student was able to make an empty can roll without touching it because: 

• The balloon's static electrical force is attracting the can towards the balloon. 

• The can's electromagnetic force is repelling the can away from the balloon. 

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

which choice is the best explanation of electromagnetism.

• An electromagnet directly demonstrates the principle that an electric current flowing through a wire creates a magnetic field.

• An iron nail becomes a permanent magnet because it is magnetized by the electromagnet.

Tags

NGSS.MS-PS2-5

When the frequency of a wave decreases, the___of the wave increases.

• wavelength

• wave speed

Tags

NGSS.HS-PS4-1

Which sequence of energy transformations occurs after a battery-operated flashlight is turned on?

• chemical → electrical → light

• chemical → light → electrical