What is Atmospheric Pressure?

Atmospheric pressure, also known as air pressure, is the force exerted onto a surface by the weight of the air above that surface in the Earth's atmosphere. It is the pressure caused by the weight of the atmosphere pushing down on the Earth's surface and on everything within the atmosphere.

Units of Measurement

Atmospheric pressure is commonly measured in units of pressure such as:

Kilopascals (kPa)
Millimeters of Mercury (mmHg)
Pounds per Square Inch (psi)

Factors Affecting Atmospheric Pressure

Several factors can affect atmospheric pressure, including:

Altitude: As altitude increases, atmospheric pressure decreases.
Temperature: Higher temperatures generally result in lower air pressure, while lower temperatures result in higher air pressure.
Weather Conditions: Changes in weather can cause fluctuations in atmospheric pressure.

Measurement and Instruments

Barometers are commonly used to measure atmospheric pressure. There are two main types of barometers:

Mercury Barometer: Uses a column of mercury to measure and indicate changes in atmospheric pressure.
Aneroid Barometer: Utilizes a small, flexible metal box to measure changes in atmospheric pressure.

Effects of Atmospheric Pressure

Atmospheric pressure has various effects on our daily lives, including its influence on weather patterns, the behavior of gases, and even human health at high altitudes.

Study Guide for Atmospheric Pressure

When studying atmospheric pressure, consider the following key points:

Understand the concept of atmospheric pressure and how it is measured.
Learn the units of measurement commonly used for atmospheric pressure.
Explore the factors that can affect atmospheric pressure and how they influence it.
Study the different instruments used to measure atmospheric pressure, such as barometers.
Examine the effects of atmospheric pressure on weather, gases, and human health.

By grasping these essential aspects of atmospheric pressure, you can gain a comprehensive understanding of this important concept in Earth's atmosphere.

◂Math Worksheets and Study Guides Seventh Grade. Introduction to Algebra

Study Guide

Introduction to Algebra

Activity Lesson

Algebraic Expression Cards

Worksheet/Answer key

Introduction to Algebra

Worksheet/Answer key

Introduction to Algebra

Worksheet/Answer key

Introduction to Algebra

Worksheet/Answer key

Algebra Riddles

The resources above cover the following skills:

Algebra (NCTM)

Represent and analyze mathematical situations and structures using algebraic symbols.

Develop an initial conceptual understanding of different uses of variables.

Use symbolic algebra to represent situations and to solve problems, especially those that involve linear relationships.

Recognize and generate equivalent forms for simple algebraic expressions and solve linear equations

Grade 7 Curriculum Focal Points (NCTM)

Number and Operations and Algebra: Developing an understanding of operations on all rational numbers and solving linear equations

Students extend understandings of addition, subtraction, multiplication, and division, together with their properties, to all rational numbers, including negative integers. By applying properties of arithmetic and considering negative numbers in everyday contexts (e.g., situations of owing money or measuring elevations above and below sea level), students explain why the rules for adding, subtracting, multiplying, and dividing with negative numbers make sense. They use the arithmetic of rational numbers as they formulate and solve linear equations in one variable and use these equations to solve problems. Students make strategic choices of procedures to solve linear equations in one variable and implement them efficiently, understanding that when they use the properties of equality to express an equation in a new way, solutions that they obtain for the new equation also solve the original equation.