# 8th grade Chapter 3 ALL Science Terms

## 27 terms · 8th grade Chapter 3 ALL Science Terms-This comes straight from the 2 quizzes

### Friction

The General name for the force that opposes motion between 2 surfaces that are in contact with each other

### Air Resistance

The force air exerts on a moving object

### Terminal Velocity

The Highest velocity achieved by a falling object

### A net force acting on an object causes the object to accelerate in the direction of the force.

Newton's Second Law of Motion

### Newton

The Unit of Force

### Microwelds

Tiny areas where bumps on surfaces stick together as they rub past each other

### Sliding Friction

Friction that opposes motion between two surfaces that are trying to move past each other

### Rolling Friction

Friction that opposes motion between a rolling object and the surface it is rolling over

### No, it stays the same.

Would your mass change on the moon?

### Force

A push or pull on an object

### mass and the closer the distance

The 2 things that affect the amount of gravitational attraction there is between 2 objets

### Projectile

Any thing propelled through space or air

### Curved

A thrown object follows what shape path?

### Gravity, Inertia, Air Resistance, Friction

The 4 things that effect the path of a projectile

### Centripital

Acceleration along a curved path is known as____________ acceleration

### Satellite

Anything in orbit around another body

### Action Force

The force that is being applied to an object

### Reaction Force

the Force that results after the action force is applied

### Mass and Velocity

What does momentum depend on?

### p

The Symbol for momentum

### kg-m/s

The units for momentum

### To every action there is an equal and opposite reaction

Newton's 3rd Law of Motion

Weight Formula

### a=vf-vi/t

acceleration formula

Force formula

momentum formula

### mivi=mfvf

2 objects (momentum)