Friction and Gravity

When you swim in a pool,

• Sliding friction occurs

• Static friction occurs

• Rolling friction occurs

• Fluid friction occurs

When you rub your palms together,

• Sliding friction occurs

• Static friction occurs

• Rolling friction occurs

• Fluid friction occurs

When you skateboard on a ramp,

• Sliding friction occurs

• Static friction occurs

• rolling friction occurs

• fluid friction occurs

When you push a desk that doesn't move,

• Sliding friction occurs

• static friction occurs

• rolling friction occurs

• fluid friction occurs

Tags

NGSS.MS-PS2-2

The ______________ states that the force of gravity acts between all objects in the universe that have mass.

• Newton's first law

• Newton's second law

• Newton's third law

• Law of universal gravitation

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

As distance increases, gravitational force _________________

• Increases

• Decreases

• Stays the same

Tags

NGSS.MS-ESS1-2

When you stand on a bathroom scale, it displays the _______________ that Earth is exerting on you.

• gravitational force

• mass

• power

Tags

NGSS.MS-PS2-4

Friction acts in a a direction _________________ to the direction of the object's motion.

• similar

• opposite

• that is nonexistent

When the irregularities of one surface come into contact with those of another surface, ___________ occurs

• Gravity

• Orbit

• Friction

• Electricity

The applied force required to push something across a surface _____________ as friction increases.

• Increases

• Decreases

• Stays the same

Tags

NGSS.MS-PS2-2