Atmosphere

The atmosphere is a layer of gases surrounding the Earth. It is held in place by the force of gravity and is composed of several different gases, with the two most abundant being nitrogen and oxygen. The atmosphere plays a critical role in supporting life on Earth by providing the air we breathe, moderating the Earth's temperature, and protecting us from the harmful effects of the sun's radiation.

Composition of the Atmosphere:

The Earth's atmosphere is made up of the following gases:

Nitrogen (N₂) - 78%
Oxygen (O₂) - 21%
Argon (Ar) - 0.93%
Carbon Dioxide (CO₂) - 0.04%
Trace Gases (such as helium, methane, ozone, and water vapor) - 0.03%

Layers of the Atmosphere:

The atmosphere has several distinct layers, each with its own unique characteristics:

Troposphere - the lowest layer where weather occurs
Stratosphere - contains the ozone layer which absorbs UV radiation
Mesosphere - where most meteors burn up
Thermosphere - contains the ionosphere where auroras occur
Exosphere - the outermost layer where atmosphere gradually merges with outer space

Functions of the Atmosphere:

The atmosphere performs several important functions, including:

Protection from harmful solar radiation
Regulation of temperature through the greenhouse effect
Supporting life by providing oxygen and other gases
Weather and climate regulation

Study Guide:

To study the atmosphere, make sure to focus on the following key points:

Composition of the atmosphere
Layers of the atmosphere and their characteristics
Functions of the atmosphere
Impact of human activities on the atmosphere (e.g., air pollution, greenhouse gases)
Relationship between the atmosphere and climate change

Understanding these concepts will provide a solid foundation for comprehending the role and importance of the Earth's atmosphere.

◂Math Worksheets and Study Guides Fifth Grade. Place Value

The resources above cover the following skills:

Number and Operations (NCTM)

Understand numbers, ways of representing numbers, relationships among numbers, and number systems.

Understand the place-value structure of the base-ten number system and be able to represent and compare whole numbers and decimals.

Algebra (NCTM)

Use mathematical models to represent and understand quantitative relationships.

Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.

Connections to the Grade 5 Focal Points (NCTM)

Number and Operations: Building on their work in grade 4, students extend their understanding of place value to numbers through millions and millionths in various contexts. They apply what they know about multiplication of whole numbers to larger numbers. Students also explore contexts that they can describe with negative numbers (e.g., situations of owing money or measuring elevations above and below sea level).

Atmosphere

Composition of the Atmosphere:

Layers of the Atmosphere:

Functions of the Atmosphere:

Study Guide:

[Atmosphere] Related Worksheets and Study Guides:

◂Math Worksheets and Study Guides Fifth Grade. Place Value

The resources above cover the following skills: