This learning resource is available in interactive and printable formats. The interactive worksheet can be played online and assigned to students. The Printable PDF version can be downloaded and printed for completion by hand.
This 250-word reading passage introduces fourth-grade students to the fundamental concept of how land and water are distributed across Earth's surface, aligned with NGSS standard 4-ESS2-2. Students discover that approximately 70 percent of our planet is covered by water including oceans, lakes, and rivers, while about 30 percent consists of land including continents and islands. The passage explains that land and water are not spread evenly across the globe, with most land concentrated in the Northern Hemisphere. Through simple, age-appropriate language, students learn to identify large-scale patterns on Earth's surface by examining globes and world maps. The content builds foundational understanding of Earth's systems and prepares students for hands-on investigations about how these features interact. Audio-integrated features support diverse learners by providing text-to-speech options. The passage includes bolded vocabulary terms with immediate definitions, real-world examples, and an interesting fact about Antarctica. Supplementary materials include a simplified differentiated version for struggling readers, Spanish translations of both passages, a comprehensive glossary, multiple-choice questions testing recall and comprehension, writing activities requiring application of concepts, and graphic organizers for comparing land and water features. This complete educational resource supports NGSS Disciplinary Core Idea ESS2.B: Plate Tectonics and Large-Scale System Interactions.
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"Earth's surface distribution featuring seven continents and vast oceanic water bodies." by WikiImages / Pixabay.
Earth's surface is made up of two main types of features: land and water. Understanding how these features are spread across our planet helps us learn about Earth's systems and how they work together.
When you look at a globe or world map, you can see that water (liquid that fills oceans, lakes, and rivers) covers most of Earth's surface. Scientists have measured that about 70 percent of Earth is covered by water. Most of this water is in oceans, which are very large bodies of salt water. The remaining 30 percent of Earth's surface is land, which includes continents (large areas of land) and islands (smaller pieces of land surrounded by water).
Land and water are not spread evenly across Earth. If you examine a globe carefully, you will notice that most of the land is located in the Northern Hemisphere (the half of Earth north of the equator). The Southern Hemisphere (the half of Earth south of the equator) has much more water than land. For example, the Pacific Ocean alone covers more area than all of Earth's land combined!
This uneven distribution creates patterns we can observe. The seven continents (Africa, Antarctica, Asia, Australia, Europe, North America, and South America) are separated by oceans. These large-scale patterns affect weather, climate, and where plants, animals, and people live.
Interesting Fact: Antarctica is Earth's fifth-largest continent and is almost completely covered by ice, containing about 90 percent of all the ice on our planet!
What percent of Earth is covered by water?
About 30 percentAbout 50 percentAbout 70 percentAbout 90 percent
What are very large bodies of salt water?
LakesOceansRiversIslands
How many continents does Earth have?
Five continentsSix continentsSeven continentsEight continents
Why does the Northern Hemisphere look different?
It has more waterIt has more landIt has no oceansIt has no continents