6.7a Types of Forces

a force that opposes motion between two surfaces that are in contact

• magnetic force

• gravity

• normal force

• friction

Answer explanation

Friction is the force that opposes motion between two surfaces in contact. It acts to resist sliding and is essential in everyday activities, making it the correct answer to the question.

A ___________ is a push or pull

Answer explanation

A force is defined as a push or pull acting on an object. It can cause an object to accelerate, change direction, or change shape, making 'force' the correct answer to complete the statement.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

the force of attraction or repulsion generated by magnetic material

• gravity

• force

• effect

• magnetic force

Answer explanation

The force of attraction or repulsion generated by magnetic material is specifically called 'magnetic force'. This distinguishes it from other forces like gravity, making 'magnetic force' the correct choice.

Tags

NGSS.MS-PS2-3

a force that acts on an object lying on a surface and acts in a direction perpendicular to the surface.

• normal force

• applied force

• magnetic force

• gravity

Answer explanation

The normal force is the force that acts perpendicular to the surface on which an object rests. It counteracts gravity and supports the object, making it the correct choice for a force acting perpendicular to a surface.

Name the missing force...

• weight force

• normal force

• applied force

• frictional force

Answer explanation

The normal force is the support force exerted by a surface perpendicular to an object resting on it. It balances the weight force, making it the missing force in this context.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Name the missing force...

• frictional force

• weight force

• tension

• buoyant force

Answer explanation

The missing force is the frictional force, which opposes the motion between surfaces in contact. It plays a crucial role in determining how objects move or stay at rest.

Tags

NGSS.HS-PS2-1

The force that pulls us, and everything around us, towards the earth.

• Motion

• Gravity

• Unbalanced force

• Friction

Answer explanation

The force that pulls us towards the Earth is known as gravity. It is responsible for keeping us grounded and affects all objects with mass, making it the correct answer.

Tags

NGSS.MS-PS2-4

Resistance when one surface or object moves across another.

• Friction

• Inertia

• Gravity

• Force

Answer explanation

Friction is the resistance that occurs when one surface moves across another. It is the force that opposes motion, making it the correct answer to the question.

A force is described by its ________ and its _________.

• magnitude, direction

• strength, distance

• altitude, direction

• size, dimension

Answer explanation

A force is defined by its magnitude (strength) and direction (the way it acts). Therefore, the correct answer is 'magnitude, direction', as these two components fully describe a force's characteristics.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What type of force?

• Magnetic

• Gravitational

• Applied

• Normal

Answer explanation

The correct answer is Magnetic because it refers to the force exerted by magnets, which can attract or repel certain materials. Gravitational, applied, and normal forces are different types of forces not related to magnetism.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5