ITMS Checkpoint Review Flashcard 2

Front

How can the student increase the speed of the electric motor?

Back

by using more wire in the coil

Front

Which design changes will cause the strength of a crane's electromagnet to increase?

Back

increasing the voltage and increasing the number of wire loops

Front

How does the student's device model a generator?

Back

When the coil moves between the magnetic poles, a current is produced in the coil to power the light bulb.

Front

Which action will most likely allow the student to observe a force between the magnet and the paperclip?

Back

Decrease the distance between the magnet and the paperclip.

Front

A student attaches two identical balloons (X and Y) to the ceiling using a nylon thread so that the balloons are near each other. The table shows the observations from three different activities performed with the balloons. What evidence best supports the claim that there is a non-contact force between the balloons?

Back

The balloons are not touching and tend to move away from each other when both are rubbed with wool.

Front

What happens to the magnetic field strength when the distance between two magnets is increased?

Back

The magnetic field strength decreases as the distance between the magnets increases.

Front

What is the effect of increasing the number of turns in the coil of an electromagnet?

Back

Increasing the number of turns in the coil increases the strength of the electromagnet.

Front

How can a student demonstrate the presence of a magnetic field using iron filings?

Back

By sprinkling iron filings around a magnet, the filings will align along the magnetic field lines, visually demonstrating the field.