Unit 1 Chapter 4&5 Flashcard

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It typically consists of coiled wire and a source of electric charge, such as a battery.

Front

What happens to an electromagnet when the electric current is turned off?

Back

When the electric current is turned off, the electromagnet loses its magnetic field, causing any ferromagnetic materials it was holding (like scrap metal) to fall.

Front

What are balanced forces?

Back

Balanced forces are forces that are equal in size and opposite in direction, resulting in no change in motion of an object.

Front

What occurs when forces become unbalanced?

Back

When forces become unbalanced, it can cause an object to start moving or change its motion.

Tags

NGSS.MS-PS2-2

Front

Give an example of an object that is not made with electromagnets.

Back

Sneakers are an example of an object that is not made with electromagnets.

Front

What is the role of a battery in an electromagnet?

Back

A battery provides the electric charge necessary to create a magnetic field in an electromagnet.

Tags

NGSS.MS-PS2-3

Front

How does coiling wire affect the strength of an electromagnet?

Back

Coiling wire increases the strength of an electromagnet because it concentrates the magnetic field lines, enhancing the overall magnetic effect.

Tags

NGSS.MS-PS2-3

Front

What is the principle behind how an electromagnet works?

Back

An electromagnet works on the principle that an electric current flowing through a wire generates a magnetic field around it.

Front

What is a ferromagnetic material?

Back

A ferromagnetic material is a material that can be magnetized; it has magnetic domains that can align in the presence of a magnetic field.

Tags

NGSS.MS-PS2-3

Front

What is the difference between permanent magnets and electromagnets?

Back

Permanent magnets produce a constant magnetic field without the need for an electric current, while electromagnets require an electric current to generate a magnetic field.