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Forces and Motion Concepts

Forces and Motion Concepts

Assessment

Interactive Video

Physics

8th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

This lesson covers California 8th grade science content standard 2D, focusing on identifying forces acting on objects, including gravity, friction, and elastic forces. It explains the law of universal gravitation, the difference between mass and weight, and the concepts of static and sliding friction. The lesson also discusses elastic forces like tension and compression, and the normal force, which is perpendicular to surfaces.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the California 8th grade science content standard 2D?

Identifying chemical reactions

Studying plant biology

Identifying forces acting on objects

Understanding the solar system

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which law explains the attraction between all objects with mass?

Ohm's Law

Law of Conservation of Energy

Newton's First Law

Law of Universal Gravitation

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the force of gravity change with distance?

It remains constant

It increases with distance

It is unaffected by distance

It decreases with distance

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the difference between mass and weight?

Weight is a force, mass is not

Mass changes with location, weight does not

Weight is constant, mass changes with gravity

Mass is measured in pounds, weight in kilograms

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of force opposes the movement between two surfaces in contact?

Gravitational force

Elastic force

Frictional force

Magnetic force

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is static friction?

Friction when objects are moving

Friction that prevents sliding

Friction in liquids

Friction that increases speed

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when static friction is overcome?

Objects start to slide

Friction disappears

Objects move upwards

Objects remain stationary

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