Science
GED Science Practice Test 7
Forty new multiple-choice questions, none repeated from earlier tests. This set focuses on how energy moves: through food chains, through machines, and from one form to another. It also covers infections and the body’s defenses, sound and light waves, the greenhouse effect and sea level, and how scientists build and revise models. The tips below are about reading each question so that you answer what it actually asks.
Question 1 of 40
0 answered
A backyard compost bin holds food scraps and dead leaves. After a few months, the pile has turned into dark, crumbly soil that gardeners use to feed plants. Which organisms did most of this work?
Read the last line first
Most GED Science items put a short passage or table first and the actual question on the last line. Read that last line before the passage. Knowing whether you need a cause, a calculation, a conclusion, or a limitation tells you which details to look for, so you spend less time rereading.
Pay close attention to small words in the question, such as most likely, best supported, first, and not. A choice can be true and still be wrong if it answers a different question. After you pick an answer, read the last line one more time and check that your choice answers it directly.
Track energy step by step
Many questions in this set ask where energy comes from or where it goes. Write the steps as a chain, such as sunlight to grass to rabbit to fox, or wind to electricity to battery to sound. Then find the step the question is asking about. Energy is never created or destroyed, so if a choice says energy disappeared, look for the heat or sound it became instead.
For food chains, remember that only about a tenth of the energy at one level reaches the next. For machines, remember that less force always means more distance, because the work stays the same. Most wrong answers in these questions break one of those two rules.
Frequently asked questions
- What should I do if I keep missing energy questions?
- Read the energy sections of the life science and physical science study guides, then redo the missed items by drawing each energy chain before you look at the choices. Seeing every step usually shows where the trap was.
- How do I know whether a question wants a fact or a conclusion from the data?
- Look at the last line. Words like based on the table or best supported mean the answer must come from the information given. If the question asks why something happens without data, it is testing a science idea you should know.
More GED practice tests
Math Practice Test 1
40 questions · Free
Math Practice Test 2
40 questions · Free
Math Practice Test 3
40 questions · Free
Math Practice Test 4
40 questions · Free
Math Practice Test 5
40 questions · Free
Math Practice Test 6
40 questions · Free
Math Practice Test 7
40 questions · Free
Math Practice Test 8
40 questions · Free
Science Practice Test 1
40 questions · Free
Science Practice Test 2
40 questions · Free
Science Practice Test 3
40 questions · Free
Science Practice Test 4
40 questions · Free
Science Practice Test 5
40 questions · Free
Science Practice Test 6
40 questions · Free
Science Practice Test 8
40 questions · Free
RLA Practice Test 1
40 questions · Free
RLA Practice Test 2
40 questions · Free
RLA Practice Test 3
40 questions · Free
RLA Practice Test 4
40 questions · Free
RLA Practice Test 5
40 questions · Free
RLA Practice Test 6
40 questions · Free
RLA Practice Test 7
40 questions · Free
RLA Practice Test 8
40 questions · Free
Social Studies Practice Test 1
40 questions · Free
Social Studies Practice Test 2
40 questions · Free
Social Studies Practice Test 3
40 questions · Free
Social Studies Practice Test 4
40 questions · Free
Social Studies Practice Test 5
40 questions · Free
Social Studies Practice Test 6
40 questions · Free
Social Studies Practice Test 7
40 questions · Free
Social Studies Practice Test 8
40 questions · Free
Or drill a single topic: Number Operations, Algebra, Geometry, Data Analysis, Reading Comprehension, Writing and Organization.