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How Does the Moon Cause Tides

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

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Format: Interactive (Online), Printable (PDF)
Grades: 5678
Subjects: scienceela
Standards: MS-ESS1-2
Languages: English, Spanish

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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 informational science passage for grades 6-8 explains how the Moon causes tides on Earth. Aligned with NGSS standard MS-ESS1-2 and disciplinary core idea MS-ESS1.B, the passage describes the mechanism of tidal formation through the Moon's gravitational pull. Students explore how gravity creates tidal bulges on opposite sides of Earth, why coastlines experience high and low tides as Earth rotates, and examine real-world examples like the Bay of Fundy. The passage includes 8 key science vocabulary terms (gravity, tides, tidal bulge, high tide, low tide, rotation, gravitational pull, coastline), audio integration for accessibility, a simplified differentiated version for struggling readers, Spanish translations, comprehension questions, writing activities, and graphic organizers. This resource helps students understand Earth-Moon system interactions and develop scientific reasoning skills through evidence-based explanations of natural phenomena.

Written by Workybooks TeamPublished by Workybooks

Sample passage and quiz content

CONTENT PREVIEW

Tides-moon — The Moon causes tides through its gravitational pull on Earth's oceans.

The Moon causes tides through its gravitational pull on Earth's oceans. Gravity is a force that pulls objects toward each other. The Moon's gravity pulls on water in the oceans. This creates bulges of water on two sides of Earth.

The mechanism works in a specific way. The Moon pulls hardest on the water closest to it. This creates a tidal bulge on the side of Earth facing the Moon. Scientists explain that another bulge forms on the opposite side. This happens because Earth itself gets pulled more than the water on the far side. The water on the far side stays behind, creating a second bulge.

As Earth rotates, coastlines move through these two bulges. When a coastline passes through a bulge, it experiences high tide. Water levels rise along the shore. Between the bulges, water levels drop. This creates low tide. Most coastlines experience two high tides and two low tides each day.

Evidence shows this pattern clearly in places like the Bay of Fundy in Canada. This bay has some of the highest tides on Earth. Water levels can change by more than 15 meters between high and low tide. Scientists observe these dramatic changes twice daily as Earth rotates.

Understanding tides matters for many reasons. Tides affect ocean ecosystems and coastal communities. They influence when boats can enter harbors. They shape beaches and coastal landforms over time. The Moon remains the main driver of Earth's tides, demonstrating how objects in space can affect our planet.

Interesting Fact: The Sun also creates tides, but they are weaker than the Moon's tides. When the Sun and Moon align, their combined pull creates extra-high spring tides.

What is the main force that causes tides on Earth?

The Moon's gravitational pullEarth's rotation speedWind blowing across the oceanThe Sun's heat on ocean water

How many tidal bulges form on Earth at the same time?

One bulgeTwo bulgesThree bulgesFour bulges

What does the term 'gravitational pull' mean in this passage?

The speed at which Earth rotatesThe attractive force one object exerts on anotherThe distance between the Moon and EarthThe temperature of ocean water

According to the passage, what is a 'tidal bulge'?

A type of ocean waveA storm in the oceanA raised area of ocean water created by the Moon's gravityA deep trench in the ocean floor

Why does a second tidal bulge form on the side of Earth opposite the Moon?

The Sun pulls water on that sideEarth rotates faster on that sideWind pushes water to that sideEarth gets pulled more than the water on the far side, so water stays behind

What happens when a coastline passes through a tidal bulge?

The coastline experiences low tideThe coastline experiences high tideThe water temperature increasesOcean currents stop moving

How many high tides do most coastlines experience each day?

One high tideTwo high tidesThree high tidesFour high tides

Based on the passage, what can you infer about the Bay of Fundy?

It has no tides at allIt demonstrates the dramatic effects of tidal changesIt is not affected by the Moon's gravityIt only has one tide per day

True or False: The Sun has no effect on Earth's tides.

TrueFalse

True or False: Tides can influence when boats can safely enter harbors.

TrueFalse