More science projects and experiments
A collection of science projects, videos and experiments for various grades and topics.
Science Projects or Science Experiments: Grades 3 & 4
Weather Barometers : Understanding Barometer Readings
To understand barometer readings, measure the air pressure using any type of barometer, and compare the pressure reading to the average air pressure of 29.92 inches of mercury. Find out how low pressure generally means bad weather and high pressure signifies good weather with information from a television meteorologist in this free video on barometers.
Weather Barometers : What Does a Barometer Measure?
A barometer measures the pressure of the atmosphere on the earth or the weight of the atmosphere pressing down towards the earth. Learn how high pressure means clear skies and good weather, while low pressure generally means cloudy, stormy conditions with information from a television meteorologist in this free video on barometers.
Weather Barometers : How Does a Barometer Work?
A barometer works by showing the change in air pressure based on the movement of either mercury or a mixture of beryllium and copper. Learn about different types of barometers, including liquid, mercury and aneroid barometers, with insight from a television meteorologist in this free video on barometers.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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