Cfe Q1 and Q2 Review

Which modification would increase the magnetic strength of the electromagnet?

• using a thinner nail

• decreasing the length of the nail

• increasing the number of turns in the coil

• decreasing the number of turns in the coil

Tags

NGSS.MS-PS2-3

Based on the data, which modifications will result in generating the fastest speed of the motor?

• fewer turns of thicker copper wire for the coil

• more turns of thinner copper wire for the coil

• more turns of thicker copper wire for the coil

• fewer turns of thinner copper wire for the coil

Tags

NGSS.MS-ETS1-1

A space mission to Mars detected the presence of argon in its atmosphere. Which type of instrument was in the space mission to Mars that helped detect the presence of argon?

• radio telescope

• reflector telescope

• satellite

• spectroscope

Tags

NGSS.MS-ESS1-3

What conclusion is supported by the data?

• The strength of an electromagnet cannot be predicted based on the number of coils.

• The strength of an electromagnet increases as the number of coils increases.

• The strength of an electromagnet does not depend on the number of coils.

• The strength of an electromagnet decreases as the number of coils increases.

Tags

NGSS.MS-PS2-3

What is the difference between the magnetic field of a bar magnet and electromagnet?

• The magnetic field produced in a bar magnet has a higher intensity than that of an electromagnet.

• The magnetic field in an electromagnet lasts only as long as there is a supply of electric current.

• The intensity of the magnetic field in a bar magnet can be increased or decreased.

• The direction of the magnetic field in a bar magnet varies with respect to time.

Tags

NGSS.MS-PS2-3

In which location was the gravitational force the weakest between the center of the Earth and Mike?

• location W

• location X

• location Y

• location Z

How can the student arrange the magnets to feel the force of the magnetic field as a result of repulsion?

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Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which action will demonstrate that the balloons can either attract or repel each other?

• Push the balloons toward each other to generate a magnetic field.

• Place a magnet in between the balloons to generate a magnetic field.

• Cover one balloon with a cotton cloth to generate a gravitational field.

• Rub both balloons with a wool rag to generate an electric field.

Tags

NGSS.MS-PS2-5

A student applies force to a cart. Which model accurately shows a cart that will remain stationary?

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Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which statement about the object's motion is true?

• The speed at segment 2 is faster than segment 3.

• The speed is greatest at segment 3.

• The speed is slowest at segment 3.

• The speed at segment 4 is faster than segment 3.

Tags

NGSS.MS-PS3-1