GED Science Preparation Course 2026

This course is for adults in the United States who are getting ready for the GED® Science test. It covers the test format, the science practices (experiments, data and evidence), life science, physical science, and Earth and space science, using short scenarios and data tables like those on the test. Study each lesson, try its topic quiz, then take the timed 40-question final assessment. Score 80% or more to get a certificate of completion.

课程
美国
100道题
核对于2026年10月13日
事实核查：2026年10月13日

快速解答

这门免费课程包括约360分钟的课程、6个不限时的专题测验（共100道题），以及一次随机抽取40道题的限时期末评估。期末评估得分达到80%或以上即可下载结业证书（私人颁发，未经认证）。已于2026年10月13日根据官方资料核对。

从课文开始GED Science Preparation Course Lessons：阅读时间约360分钟。测试中的每道题在课文中都有讲解。

你将学到什么

Describe the format, timing, calculator rules and scoring of the GED Science test
Identify hypotheses, variables and controls, and judge how well an experiment is designed
Read tables and graphs, make predictions, and calculate the mean, median, range and probability
Explain body systems, homeostasis, nutrition, disease, cells and heredity, including Punnett squares
Trace energy through ecosystems and explain natural selection
Calculate speed, acceleration, momentum, force, work, power and density, and balance simple equations
Explain Earth's cycles, plate tectonics, natural hazards, climate, and the Sun, Moon and stars

得分达到80%或以上即可下载证书。

你的学习计划

阅读每一课，完成对应的专题测验（不限时，有解释），然后参加限时的期末评估。每次都会抽取新的题目组合。你的进度保存在此浏览器中。

专题测验1：The GED Science test and how to approach it

考前须知

The GED Science test is 90 minutes long, in one section with no breaks.
A calculator is allowed on the Science test, and a calculator reference sheet is provided.
You do not need to memorize formulas; the information you need to answer each question is provided.
The Science test is scored from 100 to 200, and 145 or higher is a passing score.
You need 145 or higher on all four GED subjects to earn your high school equivalency. A score of 165–174 is College Ready; 175–200 is College Ready + Credit, which may qualify you for up to 10 college credit hours.
About 40% of the test is life science, 40% physical science and 20% Earth and space science.
All content connects to two focusing themes: Human Health and Living Systems, and Energy and Related Systems.
About half of the questions are in scenarios, where two or three questions share one text, graph, table or diagram.

常见问题

Is this the official GED Science test?

No. This is an independent practice course. It is not run by GED Testing Service, and your scores here are not GED scores.

What does the certificate from this course show?

The certificate of completion shows that you finished this practice course and scored at least 80% on its final assessment. It is not a GED credential, not a high school equivalency and not an official score, so schools and employers will not accept it in place of the GED.

How long is the GED Science test?

It is 90 minutes long, in one section with no breaks.

What score do I need to pass GED Science?

You need 145 or higher on a scale of 100 to 200. To earn your high school equivalency, you need 145 or higher on all four GED subjects.

Do I need to memorize science formulas?

No. The official Science page says you do not need to memorize formulas; the information you need is provided. A calculator is allowed, and a calculator reference sheet is provided.

How do I sign up for the GED test?

Create a free account on ged.com, then log in to schedule your test. You can take the four subjects together or one at a time. If you need an accommodation, request it before you schedule.

这份证书是否经过认证或获得官方认可？

不是。这是一份私人颁发的结业证书，仅用于知识学习。它未获得任何政府、执照发放机构、监管机构或教育机构的认可、认证或批准，也不能替代法律要求的任何执照、资格证书或培训。