Barometer

High school (ages 12+)
Environment & Earth

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/barometer

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who invented Barometer?1643
2. What is the discoverer?Evangelista Torricelli
3. What is the key feature?Measures atmospheric pressure, a critical variable for weather forecasting and altimetry
4. What is a barometer and how does it find air pressure?A barometer is a device that measures the weight of the air above us. It shows how high or low the air pressure is, which helps us know if the weather will be sunny or stormy.
5. How did the first barometer work?The first barometer used a glass tube filled with mercury. When the tube was turned upside down, the mercury fell and left a space at the top, and the height of the mercury showed the air pressure.

Atmospheric Pressure: The force exerted per unit area by the weight of the atmosphere above a given point.
Mercury Barometer: A device using a column of mercury in a vacuum-sealed tube to measure atmospheric pressure.
Aneroid Cell: A sealed, flexible metal capsule used in aneroid barometers that expands or contracts with pressure changes.
Altimetry: The measurement of altitude, often using barometric pressure as a key input.