What reading level is Earth?

Earth by Peter D. Riley is at a Level 6 reading level. Recommended for Middle Grades readers (Ages 9-12).

What age is Earth appropriate for?

Earth is recommended for Ages 9-12. HootRating: 11C (Clear).

Earth is nonfiction — Juvenile Nonfiction. Part of the Cycles in Science series.

Does Earth have any content warnings?

Earth has a HootRating of 11C (Clear). No specific content flags noted. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is Earth?

Earth by Peter D. Riley is 32 pages (approximately 4,616 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

Earth

Peter D. Riley

Earth

Age Rating, Reading Level & Content Guide

by Peter D. Riley

Cycles in Science

Reading Level 6 11C Ages 9-12 Balanced Read Page-Turner

The text is written at a 6th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is gentle with no concerning themes.

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About This Book

Discover the wonders of our planet as it twirls through space, creating day and night, guiding the tides, and bringing the changing seasons. Explore how Earth's movements shape the world around us in fascinating ways. Perfect for curious young minds eager to learn about astronomy and our place in the solar system.

Themes

Science & NatureAstronomyEarth

Quick Assessment

This is a Level 6 book with gentle content intensity. No notable content concerns flagged. Written for readers ages 9-12.

Why we rated Earth 11C

Earth is written at a Level 6 reading level across 32 pages (approximately 4,616 words). Strong independent readers around grade 7.0 can typically handle this book on their own; with parent or teacher support, Earth works for readers up to grade 8.0.

Read aloud, Earth takes about 31 minutes, which fits within a single read-aloud session.

We rate Earth as 11C ("Clear") because the content sits in the "Gentle" range — no conflict beyond everyday childhood experiences. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly gentle; no single dimension stands out as a concern.

No specific content flags were raised by community reviewers, which is consistent with the gentle intensity score.

Thematically, Earth explores science & nature, astronomy, and earth — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
✓ Reluctant readers who need fast-paced, hook-heavy stories to stay engaged.
✓ Kids drawn to stories about science & nature, astronomy, earth.
✓ Readers who fall hard for one book and want a long series to live in — there are 3 more books in the Cycles in Science series.
✓ Curious kids who prefer real-world topics over made-up stories.

Maybe not for

! Readers whose emotional readiness lags behind their decoding skills — this book's intensity outruns its reading level, a classic "gifted kid" mismatch.