Science

GED Science Practice Test 1

Forty multiple-choice questions split across life science, physical science, and earth and space science. Each question includes a worked explanation that shows exactly how to read the evidence and why the most tempting wrong answer fails.

Question 1 of 40

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Which cell structure releases most of the energy a cell uses?

What this GED Science practice test covers

The questions follow the official GED Science test blueprint: roughly 40 percent life science, 40 percent physical science, and 20 percent earth and space science. Many questions attach to a data table, diagram, or short passage that you read before answering, just like the real exam.

The test is not a trivia quiz. Most questions ask you to interpret evidence, identify a pattern in data, or evaluate whether a conclusion follows from the information given. Memorizing facts is less important than being able to read a chart and state what it shows.

How the score maps to the GED scale

Your raw percentage converts to the 100-200 reporting scale. A 145 passes and earns the GED credential. A 165 is College Ready and may waive science placement testing. A 175 or higher can earn up to three transferable college credits.

Because the GED Science test emphasizes reasoning over recall, a low first score often reflects reading speed rather than missing knowledge. Check whether your wrong answers cluster in one content area or spread evenly. Clustered errors mean study a topic; scattered errors mean slow down and re-read the stimulus.

The most common mistakes on GED Science

The most frequent error is the same one that appears on Social Studies: answering from background knowledge instead of from the data. A question might show a table of temperatures and ask what the data supports. The wrong answers are often true statements about heat transfer that happen not to appear in the table.

The second common error is misreading the axis on a graph. Check the units and the scale before you look at the trend. A line that looks steep on a graph with a compressed y-axis may represent a tiny change in the actual numbers.

Pacing on the GED Science test

Ninety minutes for roughly 34 questions gives you about two and a half minutes each, which is generous until a long passage appears. Read the question stem before the passage when a chart is involved; you will know what to look for and can skip the parts that do not matter.

Short-answer items on the official test ask you to write a brief evidence-based response. This practice set is multiple choice, so pair it with written practice: pick any question here and write two sentences explaining how the evidence supports your answer.

How to study after taking this test

If life science is your weakest area, focus on cell biology, genetics basics (dominant vs. recessive), and body systems. These topics recur on every test form. If physical science is the problem, review Newton's laws, energy transformations, and the periodic table trends. For earth science, the water cycle, plate tectonics, and climate patterns are the highest-frequency topics.

Frequently asked questions

Are there short-answer questions on the real GED Science test?
Yes. The official test includes short-answer items where you write a brief evidence-based response. These are scored on a rubric that values correct use of evidence over length.
Can I use a calculator on the GED Science test?
Yes. The on-screen TI-30XS calculator is available for questions that require computation, such as calculating averages, percentages, or unit conversions.
How many questions are on the real GED Science test?
About 34 questions in 90 minutes. The exact count varies slightly between test forms.
What topics are on the GED Science test?
Three content areas: life science (about 40%), physical science (40%), and earth and space science (20%). The test emphasizes interpreting data and evidence-based reasoning over memorization.
What score do I need to pass GED Science?
A scaled score of 145 out of 200 passes. A 165 earns College Ready status, and 175 or higher can earn college credit.

More GED practice tests

Or drill a single topic: Algebra, Geometry, Data Analysis, Reading Comprehension, Writing and Organization, Grammar and Usage.