GED Science Practice: Earth and Space Science
GED Testing Service says about 20 percent of the Science test is Earth and space science. Practice the water and carbon cycles, natural hazards, the atmosphere, plate tectonics, the solar system and stars.
35 questions in 88 minutes, the real test’s question time, split by GED Testing Service’s content shares and scored by area with an explanation for every answer. 7 of the questions are Earth and Space Science.
Or try the free Earth and Space Science drill- 25 original Earth and Space Science questions, each answer explained
- About 20% of the GED Science test
- 2 topic drills, ten questions each
In undisturbed layers of sedimentary rock, where are the oldest fossils usually found?
What Earth and Space Science covers
- Earth’s systems (ES.a–ES.b): the water and carbon cycles, natural hazards, resources, the atmosphere and oceans, weathering and plate tectonics.
- Space and Earth’s history (ES.c): stars and galaxies, the Sun, planets and moons, seasons, tides and eclipses, and the age of Earth.
Codes are GED Testing Service’s assessment targets and content topics from its Assessment Guide for Educators; the topic groupings and summaries are ours.
Earth and Space Science practice by topic
- Earth’s systems
The water and carbon cycles, natural hazards, resources, the atmosphere and oceans, weathering and plate tectonics. 13 questions.
Free Earth’s systems drill - Space science
Stars and galaxies, the Sun, planets and moons, seasons, tides and eclipses, and the age of Earth. 12 questions.
Free space science drill
Free Earth and Space Science drill (ten questions across its topics)
7 Earth and Space Science questions in a full timed exam
35 questions in 88 minutes, the real test’s question time, split by GED Testing Service’s content shares and scored by area with an explanation for every answer. 7 of the questions are Earth and Space Science.
Or try the free Earth and Space Science drillCommon questions
How much Earth and space science is on the GED?
About 20 percent of the Science test, according to GED Testing Service’s Assessment Guide for Educators.
What Earth science topics are on the GED?
Interactions between Earth’s systems and living things, natural hazards, natural resources, the atmosphere and oceans, Earth’s interior and landforms, and the structure of the universe, the solar system and Earth’s age.
35 questions in 88 minutes, the real test’s question time, split by GED Testing Service’s content shares and scored by area with an explanation for every answer. 7 of the questions are Earth and Space Science.
Or try the free Earth and Space Science drillMore GED Science practice
Content areas and shares checked November 2026: Assessment Guide for Educators: Science · GED Testing Service: Science test.
Original independent practice. Every question is written for practice from GED Testing Service’s published assessment targets; none are GED test questions. Not affiliated with or endorsed by GED Testing Service or the American Council on Education. GED® and GED Ready® are registered trademarks of the American Council on Education, administered by GED Testing Service under license.