Earth

Name: Earth
Author: Peter D. Riley
ISBN: 1575726203

Age Rating, Reading Level & Content Guide

by Peter D. Riley

Cycles in Science

Reading Level 6 C · Gentle 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. Its HootRating code, C, means gentle content.

Find on Amazon Listen on Audible

We may earn a commission from these links.

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 C (Gentle)

Earth is written at a Level 6 reading level across 32 pages (approximately 4,616 words). Reading-wise, most kids in grade 7 and up can manage Earth on their own; younger readers can enjoy it with a parent or teacher reading along.

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

We rate Earth as C (Gentle) 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 looking for something heavier — this is a gentle, low-stakes story by design.

For Parents

Content Intensity

C · Gentle

Emotional

Gentle

Physical

Gentle

Social

Gentle

Thematic

Gentle

Reading the HootRating code: the first letter is the content intensity (C = Gentle · L = Mild · M = Moderate · I = Intense · V = Very Intense); the second, when there is one, is the kind of content that drives it (E = Emotional · P = Physical · S = Social · T = Thematic). Reading level and age range are rated separately. How we rate

No conflict beyond everyday childhood experiences. Safe for sensitive readers.

Data confidence: standard

Was our "Gentle" content intensity rating accurate for this book?