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TASC Science Exam

Everything you need to know!

The TASC Science test assesses your ability to understand, interpret, and apply scientific information. You will have 85 minutes to answer approximately 48-49 multiple-choice questions. Most questions on the TASC Science Test will be multiple-choice, but you may also see multiple-response, drag-and-drop, and constructed-response items.

Each question on the TASC Science Test will assess both your familiarity with a content area and your ability to perform a skill related to understanding and interpreting scientific information from three main scientific areas: Life Science, Physical Science, and Earth and Space Science.

Life Science topics account for 34% of the questions on the TASC Science test. These biology-related topics include cell structures and processes, human body systems, health and nutrition, heredity and reproduction, genetics and DNA, evolution and natural selection, and the organization of ecosystems.

Physical Science topics account for 33% of the questions on the TASC Science test. These physics and chemistry-based topics include atoms and molecules, properties and states of matter, chemical reactions, energy and work, motion and forces, waves, electriCity, and magnetism.

Earth and Space Science topics account for 33% of the questions on the TASC Science test. These geology/astrophysics-based topics include include the structure of Earth, plate tectonics, geological cycles and processes, renewable and nonrenewable natural resources, weather and climate, the solar system, and the universe.


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For Private TASC lessons

AP Calculus, AP Physics, AP Chemistry

Dr. Donnelly can teach you the correct approach for each type of question that will appear on the HiSET, the GED or TASC tests. This will significantly increase your chances of getting the required score to attend the school of your choice.

Private GED tutoring with Dr. Donnelly is available either online via Zoom or in-person at either his San Diego-based office or his Manhattan-based office in New York City (depending upon the time of year).

Dr. Donnelly is very proud that every single one of his GED students has passed the GED exam on his or her very first attempt! We are confident that he can do the same for you.


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"Dr. Donnelly was patient, kind and willing to work with me in various areas to help improve not just my score but my understanding of the questions. His schedule is flexible and he is willing to work with you to give you what you need. My score went up dramatically and I would recommend him to anyone."

Jodi B., Manhattan, New York.

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"Dr. Donnelly is patient and supportive and is clear when explaining questions that were challenging to me. He also urged me to work out questions on my own, which was extremely helpful. He created an atmosphere in which I looked forward to the challenge of each section on the practice tests, and I definitely felt more confident taking the test. If I need to prepare for another standardized test, I will definitely contact Dr. Donnelly."

Pauline E., Brooklyn, New York.

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5 star review

"Dr. Donnelly's rates are very reasonable, his location convenient and he was able to accommodate my varied schedule. After a handful of sessions in which he patiently worked with me to target the specific areas I could improve in given the limited time, I was able to reach the needed score to start college in September, thanks to Dr. Donnelly."

Clare C., Manhattan, New York.

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Learn more about the GED

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Click on the links below to learn more:

  1. About the TASC
  2. How is the TASC scored?
  3. Contact Dr. Donnelly about TASC lessons
  4. Read our TASC Reviews
  5. Buy Best-selling TASC Test Prep Book
  6. TASC Exams by Subject
    1. TASC Language Arts Reading Exam
    2. TASC Language Arts Writing Exam
    3. TASC Mathematical Reasoning Exam
    4. TASC Science Exam
    5. TASC Social Studies Exam
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