Which statement describes how a generator works?

It transforms electrical energy into mechanical energy.

It uses motion of a wire coil in a magnetic field to produce electricity.

It uses an electric current in a magnetic field to produce motion.

It transforms wire wrapped around a nail into a battery.

Which statement describes how a generator works?

It uses motion of a wire coil in a magnetic field to produce electricity

It transforms electrical energy into mechanical energy.

It uses an electric current in a magnetic field to produce motion.

It transforms wire wrapped around a nail into a battery.

Which phrase describes the energy transformation that happens in a generator?

Mechanical energy into electrical energy

Electrical energy into chemical energy

Chemical energy into electrical energy

The arrows on field lines show the direction of force in an electric field. Which statement best describes how the arrows are shown?

Arrows point away from the positive charge and toward the negative charge.

Arrows point toward both charges.

Arrows point away from the negative charge and toward the positive charge

Arrows point away from both charges.

Which statement describes the electric field around a negative charge?

Lines with arrows that point inward radiate from the charge in all directions.

Lines with arrows that point outward radiate from the charge in all directions.

Pairs of perpendicular lines with arrows that point outward extend from the charge.

Which two characteristics determine the strength of the gravitational force between two objects?

The distance between the objects' centers

The distance between the objects' far edges

The distance between the objects' near edges

Which statement accurately describes the relationship between weight and mass?

Weight is an object's mass multiplied by the amount of gravitational force acting on that object.

Mass is an object's weight multiplied by the amount of gravitational force acting on that object.

Weight is an object's mass multiplied by its diameter.

Mass is an object's weight multiplied by its diameter.

How are mass and weight alike?

Both depend on how much matter an object has.

Both are the same everywhere in the universe.

Both change with gravitational force.

Which sentence describes a difference between mass and weight?

Only weight changes depending on the gravitational force.

Only weight depends on the amount of matter in the object.

Only mass changes depending on the gravitational force.

The diagram shows a ball falling toward Earth in a vacuum. Why is the distance traveled between seconds 3 and 4 greater than the distance traveled between seconds 1 and 2?

An object falling due to gravity moves faster every second.

An object slows down as it falls toward Earth

The force on a falling object decreases as it falls.

The object must push the air out of the way as it falls.

SLA Unit 3 Noncontact Forces

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Hard

•

NGSS

MS-PS2-3, MS-PS2-4, MS-PS3-5

+4

Standards-aligned

Keshia Brown

Used 2+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which term related to electromagnetism applies only to electric force?

Charge

Repulsion

Noncontact

Attraction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which term related to electromagnetism applies only to magnetic force?

Poles

Noncontact

Protons

Attraction

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which two conditions would result in the strongest electric force between charged objects?

Objects are far apart.

Objects are insulators with unbalanced charges.

Objects are close together.

Objects are conductors with balanced charges.

Which two conditions would result in the weakest electric force between objects?

Objects are far apart.

Objects are insulators with balanced charges.

Objects are close together.

Objects are conductors with balanced charges.

The direction of force of Earth's magnetic field is from the geographic South Pole to the geographic North Pole. Where is Earth's magnetic north pole?

Near Earth's equator

Near Earth's North Pole

Near Earth's South Pole

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement best describes the direction of force shown by the magnetic field lines around a bar magnet?

Away from both the magnet's north and south poles

From the magnet's north pole to its south pole

From the magnet's south pole to its north pole

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The diagram shows an electric generator containing an electromagnet.
When the generator is working, what is in the wire?

Permanent magnet

Electric Current

Chemical energy

Small Batteries

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SLA Unit 3 Noncontact Forces

20 questions

Which term related to electromagnetism applies only to electric force?

Which term related to electromagnetism applies only to magnetic force?

Which two conditions would result in the strongest electric force between charged objects?

Which two conditions would result in the weakest electric force between objects?

The direction of force of Earth's magnetic field is from the geographic South Pole to the geographic North Pole. Where is Earth's magnetic north pole?

Which statement best describes the direction of force shown by the magnetic field lines around a bar magnet?

The diagram shows an electric generator containing an electromagnet.When the generator is working, what is in the wire?

Which statement describes how a generator works?

Which statement describes how a generator works?

What type of particles does the electromagnetic force act on?

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The diagram shows an electric generator containing an electromagnet.
When the generator is working, what is in the wire?