-They tell you the direction you’re going or the direction you need to go like on a map.

-It is also called Mariner Compass.

-The directions on a compass are North, South, East and West.

-An early form of the compass was invented in china around 1044.

-The familiar mariner's compass was invented in Europe around 1190, from whence later originated the liquid magnetic compass.

-The red sundial always points North.

-You can also get North-West, North-East, South-West, and South-East by combining two directions.

-A Barometer is used to measure atmospheric pressure.

- It can measure the pressure exerted by the atmosphere by using water, air, or mercury.

-Some types of Barometers are water-based, Mercury, Barographs and Aneroid.

-A barometer is commonly used for weather prediction, as high air pressure in a region indicates fair weather while low pressure indicates that storms are more likely.

-The first barometer is thought to have been built unintentionally by Gasparo Berti, sometime between 1640 and 1643.

-Evangelista Torricelli, who is generally credited with inventing the barometer, went on to build the first instrument with mercury in 1643.

Answer some questions to help learn even more!!!

What does a Barometer tell you?

A. Tempature

C. Atmospheric Pressure

B. Whether there willbe a tornado

What does a Compass tell you?

A. Tempature

C. Wind Speed

B. Direction