Science Benchmark Review 1

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum. It is used to lift or move loads with less effort.

Tags

NGSS.MS-PS2-2

Front

What is the purpose of the fulcrum in a lever?

Back

The fulcrum is the pivot point around which the lever rotates. It helps to balance the lever and allows for the application of force to lift a load.

Front

How can you make lifting a heavy object easier with a lever?

Back

You can make lifting easier by increasing the distance from the fulcrum to where you apply the force, which reduces the amount of effort needed.

Front

What is a sea breeze?

Back

A sea breeze is a wind that blows from the sea to the land, caused by the difference in temperature between the land and the ocean. Warm air over the land rises, and cooler air from the sea moves in to replace it.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Front

What is a land breeze?

Back

A land breeze is a wind that blows from the land to the sea, occurring at night when the land cools faster than the ocean, causing the warmer air over the ocean to rise.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help lift objects with less effort. Examples include ramps and slopes.

Front

What factors affect the effort needed to move an object on an inclined plane?

Back

The angle of the incline and the height of the plane affect the effort needed. A gentler slope requires less effort.

Front

What are the layers of the atmosphere in order?

Back

The layers of the atmosphere from the surface of the Earth upward are: Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.

Front

What is the troposphere?

Back

The troposphere is the lowest layer of the atmosphere where weather occurs and where we live. It extends from the Earth's surface up to about 8-15 kilometers.

Tags

NGSS.MS-ESS2-5

Front

What is the stratosphere?

Back

The stratosphere is the layer above the troposphere, extending from about 15 kilometers to 50 kilometers above the Earth's surface. It contains the ozone layer.