When two or more simple machines work together, they are called a(n)____.

• effort machine

• screw

• compound machine

• simple machine

The path of a projectile is ____.

• straight

• always vertical

• always horizontal

• curved

Tags

NGSS.MS-PS2-4

An object that is in free fall seems to be ____.

• slowed by air resistance

• weightless

• speeded up by air resistance

• not moving

Tags

NGSS.MS-PS2-4

Motion is a change in ____.

• time

• position

• speed

• velocity

The unit of power is the ____.

• second

• watt

• joule

• m/s

The correct symbol for the SI unit of temperature is ____.

• Celcius

• Kelvin

• seconds

• Farenheit

According to Newton's second law of motion, ____.

• F = p * v

• F = m * v

• F = m * a

• F = p * a

Tags

NGSS.MS-PS2-2

The kinetic energy of an object increases as its ____ increases.

• potential energy

• gravitational energy

• specific heat

• velocity

Tags

NGSS.MS-PS3-1

A measurement standard is defined as ____.

• the interval between two events

• the distance between two points

• the exact quantity people agree to use for comparison

• a system of prefixes

You can see this paper, your desk, and the person in front of you because light is being ____.

• reflected

• absorbed

• diffracted

• refracted

Tags

NGSS.MS-PS4-2