8th Grade Science Final

The _________ of an object describes the speed and the direction in which it is going.

• Velocity

• Acceleration

• Force

• Energy

The change in velocity of an object is defined as its ___________________.

• Speed

• Acceleration

• Force

• Momentum

Tags

NGSS.MS-PS2-2

An object that is traveling around another body in space in __________________ around the body.

• Orbit

• Free Fall

• Rest

• Motion

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The _________________ on an object is the combination of all the force acting on the object.

• Net Force

• Frictional Force

• Tension Force

• Gravitational Force

Tags

NGSS.MS-PS2-2

_________________ is the use of force to move an object in the direction of the force.

• Work

• Power

• Energy

• Motion

Tags

NGSS.MS-PS3-4

The stored energy that an object has due to the position, condition, or chemical composition is called _______________________.

• Potential Energy

• Kinetic Energy

• Mechanical Energy

• Thermal Energy

Tags

NGSS.MS-PS3-2

A(n) ___________________ is a device that helps people do work by changing the way work is done.

• Machine

• Tool

• Equipment

• Instrument

A machine's ________________ is the ratio of the machine's output force to its input force.

• Efficiency

• Mechanical Advantage

• Velocity Ratio

• Frictional Force

A(n) ________________ is a simple machine that consists of a solid bar that pivots at a fixed point.

• Lever

• Pulley

• Wheel and Axle

• Inclined Plane

An airplane leaves New York to fly to Los Angeles. It travels 3.850 km in 5.5 hours. What is the average speed of the airplane?

• 700 km

• 700 km/hour

• 700 hours

• 700 hours/km