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How Earth Orbits the Sun

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-ESS1-1
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 comprehensive middle school science reading passage aligned to NGSS standard MS-ESS1-1 explores how Earth orbits the Sun. Students discover that Earth follows a slightly elliptical path around the Sun, traveling at approximately 67,000 miles per hour and completing one full revolution every 365.25 days. The passage explains how the Sun's gravitational force keeps Earth in its orbital path and how this orbital motion, combined with Earth's axial tilt of 23.5 degrees, creates the seasonal changes we observe throughout the year. Audio-integrated features support diverse learners, while differentiated versions ensure accessibility for English Language Learners and struggling readers. The passage includes real-world connections, scientific terminology appropriate for grades 6-8, and engaging facts that help students understand Earth's place in the solar system. Activities reinforce understanding of MS-ESS1.B Earth and the Solar System concepts through multiple-choice questions, writing prompts, and graphic organizers.

Written by Workybooks TeamPublished by Workybooks

Sample passage and quiz content

CONTENT PREVIEW

"A stunning view of Earth at sunrise from space, highlighting cosmic beauty." by Zelch Csaba / Pexels.

Earth constantly moves through space on a path around the Sun. This motion is called an orbit. Earth follows a slightly elliptical path, which means the orbit is shaped like a stretched circle rather than a perfect circle. Our planet completes one full trip around the Sun every 365.25 days. This time period defines one year on Earth.

Earth travels at an incredible speed during its journey around the Sun. Scientists have measured that our planet moves at about 67,000 miles per hour through space. Despite this tremendous speed, we do not feel the motion because everything on Earth moves together at the same rate. The force of gravity from the Sun keeps Earth in its orbital path. Gravity acts like an invisible rope that pulls Earth toward the Sun. However, Earth's forward motion prevents it from falling into the Sun.

The combination of Earth's orbit and its axial tilt creates the seasons we experience. Earth's axis tilts at an angle of 23.5 degrees compared to its orbital path. As Earth moves around the Sun, different parts of the planet lean toward or away from the Sun at different times. When the Northern Hemisphere tilts toward the Sun, it receives more direct sunlight and experiences summer. At the same time, the Southern Hemisphere tilts away and experiences winter. Six months later, the positions reverse.

Evidence from satellite observations shows that Earth maintains a relatively stable orbit. The distance between Earth and the Sun varies slightly throughout the year because of the elliptical shape. Earth comes closest to the Sun in January at about 91 million miles. It reaches its farthest point in July at about 94 million miles. This difference in distance is small compared to the total orbital path. The tilt of Earth's axis affects seasons much more than the changing distance does.

Understanding Earth's orbit helps scientists explain many patterns we observe. The revolution of Earth around the Sun combined with Earth's rotation on its axis creates our calendar system. The extra quarter day each year is why we add a leap day every four years. Without this adjustment, our calendar would slowly drift out of alignment with the seasons. Earth's predictable orbital motion allows scientists to calculate the positions of planets and plan space missions years in advance.

Interesting Fact: Because Earth travels in an elliptical orbit, the Sun appears slightly larger in our sky during January when Earth is closest. The difference is only about 3 percent, which is too small for most people to notice without special equipment.

How long does it take Earth to complete one full orbit around the Sun?

365.25 days24 hours30 days7 days

What shape is Earth's orbit around the Sun?

A perfect circleA slightly elliptical pathA straight lineA square

What force keeps Earth in orbit around the Sun?

MagnetismWindGravityElectricity

In the passage, what does the word 'axial tilt' refer to?

The speed at which Earth travelsThe angle at which Earth's axis leansThe distance from Earth to the SunThe shape of Earth's orbit

What does 'revolution' mean in the context of Earth's motion?

Earth spinning on its axisThe complete trip Earth makes around the SunThe tilt of Earth's axisThe force of gravity

Why do we experience different seasons on Earth?

Because Earth moves faster in summerBecause the Sun gets hotter and coolerBecause of Earth's axial tilt and orbit combinedBecause Earth stops moving in winter

Based on the passage, what can you infer about why we don't feel Earth moving at 67,000 mph?

Earth actually moves very slowlyEverything on Earth moves together at the same rateGravity holds us too tightly to feel movementThe atmosphere blocks our ability to feel motion

If Earth's axial tilt suddenly became zero degrees, what would most likely happen to seasons?

Seasons would become more extremeSeasons would disappear or become very weakOnly the Northern Hemisphere would have seasonsSeasons would happen twice as fast

True or False: Earth is closer to the Sun during summer in the Northern Hemisphere.

TrueFalse

True or False: We add a leap day every four years because Earth's orbit takes 365.25 days.

TrueFalse