Premium

How Coastlines Change Over Time

Interactive passage with audio narration, comprehension questions, and printable PDF.

No ratings yet

Just this resource

$1.50

One-time purchase

Best value

Unlock everything

$49.99$29.99/yr

40% off until Aug 1 — 6,000+ resources

Unlock above to use these actions

Format: Interactive (Online), Printable (PDF)
Grades: 5678
Subjects: scienceela
Standards: MS-ESS2-2
Languages: English, Spanish

Send Feedback / Report an Issue

What's included

Reading passage

Reading comprehension

Audio narration

With word word highlighting

Comprehension quiz

Auto-graded

Writing activity

Open-ended response

Glossary & flashcards

Vocabulary practice

Differentiated version

Adapted for varied levels

Spanish translation

Bilingual support

About this reader

This engaging 500-word reading passage examines how coastlines change over time through the processes of erosion and deposition. Students in grades 6-8 will discover how waves wear away cliffs, storms rebuild beaches overnight, and sea level changes move shorelines inland or seaward. The passage includes real-world examples like barrier islands and Ice Age coastlines, connecting to NGSS standard MS-ESS2-2. Audio-integrated content supports diverse learners, while differentiated versions ensure accessibility for English Language Learners and struggling readers. Students explore vocabulary including erosion, deposition, barrier islands, and sea level rise. Activities include comprehension questions, writing prompts analyzing cause-and-effect relationships, and graphic organizers that help students synthesize how natural processes and human interventions shape our coasts. This standards-aligned resource builds scientific literacy while developing critical thinking about Earth's dynamic systems.

Written by Workybooks TeamPublished by Workybooks

Sample passage and quiz content

CONTENT PREVIEW

Cape Hatteras lighthouse, North Carolina LCCN2011632977 — "Cape Hatteras lighthouse, North Carolina by Carol M. Highsmith / Wikimedia Commons

Coastlines are some of the most restless boundaries on Earth. These zones where land meets ocean constantly change shape through two competing forces. Erosion wears away cliffs and carries sand away from beaches. Deposition builds new land features by dropping sediment in different locations. Scientists observe that this tug-of-war never stops reshaping our shores.

Waves provide the main force that changes coastlines. When waves crash against rocky cliffs, they break off pieces of rock over time. The ocean carries this sediment along the shore in a process called longshore drift. Evidence shows that waves can move millions of tons of sand each year. Sometimes this sand settles in calm areas and creates new landforms. Barrier islands form when waves deposit sand parallel to the coast. These narrow islands protect mainland shores from storm damage.

Sea level itself rises and falls over long time periods. During the Ice Ages, huge glaciers locked up so much water that sea level dropped significantly. Coastlines extended miles farther into what is now ocean. Scientists explain that these ancient shorelines now lie underwater on the continental shelf. Today, sea level is rising as glaciers melt and ocean water expands from warming. This rise pushes coastlines inland and can flood low-lying areas.

Storms can transform a beach in just one night. Hurricane waves may remove tons of sand from one area and pile it somewhere else. A single storm can cut through a barrier island and create a new inlet. The Outer Banks of North Carolina show this pattern clearly. These barrier islands have shifted and changed shape dramatically over the past century due to storms and rising seas.

People try to slow coastal changes through various methods. Engineers build seawalls to protect cliffs from wave erosion. Communities truck in new sand to replace what waves carry away. However, these solutions often work only temporarily. The ocean continues to erode, deposit, and reshape coastlines according to natural processes. Understanding these changes matters because millions of people live near coasts. Scientists study coastal processes to help communities plan for future changes and protect important areas.

Interesting Fact: The famous lighthouse at Cape Hatteras, North Carolina, had to be moved 2,900 feet inland in 1999 because coastal erosion brought it dangerously close to the ocean.

What are the two main forces that constantly reshape coastlines?

Erosion and depositionWaves and windStorms and glaciersPeople and animals

What is the main force that changes coastlines according to the passage?

WindWavesRainTemperature

What does the term 'barrier islands' refer to in the passage?

Islands that block ships from entering harborsNarrow islands formed by sand deposition that protect mainland shoresIslands made entirely of rocks and cliffsIslands that prevent erosion completely

According to the passage, what happened to coastlines during the Ice Ages?

They moved inland due to rising seasThey stayed in the same locationThey extended miles farther out because sea level droppedThey disappeared completely under glaciers

Why is sea level rising today according to scientists?

Because more rain is falling into the oceanBecause glaciers are melting and ocean water is expanding from warmingBecause rivers are carrying more water to the seaBecause the ocean floor is sinking

How quickly can a storm transform a beach?

Over several yearsOver several monthsOver several weeksIn just one night

What example does the passage give of a place where barrier islands have changed dramatically?

The Florida KeysThe Outer Banks of North CarolinaThe Hawaiian IslandsCape Cod, Massachusetts

Why do people build seawalls according to the passage?

To create new beaches for tourismTo protect cliffs from wave erosionTo stop all ocean waves permanentlyTo create harbors for boats

True or False: Human efforts to stop coastal changes work permanently and stop all erosion.

TrueFalse

True or False: Ancient coastlines from the Ice Ages now lie underwater on the continental shelf.

TrueFalse