GED SCIENCE EXAM QUESTIONS

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GED SCIENCE EXAM QUESTIONS

Qs and Ans - Expert- Explanation - ing score -15 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: The invisible, hypothetical matter that makes up most of the universe is known as ____ matter.

Answer:

dark Question 2: The giant parts of the Earth's crust which move around on the planet's surface are ____ plates.

Answer:

tectonic

Question 3: 21% of the Earth's atmosphere is ____.

Answer:

oxygen Question 4: According to the second law of thermodynamics, the entropy of a system must always ____.

Answer:

increase (Systems always become more disordered as time increases.)

Question 5: The Milky Way is classed as a ____ galaxy.

Answer:

spiral Question 6: The transfer of heat from objects that are in direct contact with one another is called ____.

Answer:

conduction

Question 7: The water cycle involves evaporation, condensation and ____.

Answer:

precipitation

Question 8: An alpha particle is composed of two protons and _______ neutrons.

Answer:

two (An alpha particle is also a helium nucleus.)

Question 9: A _______ bond is formed when atoms share electron pairs.

Answer:

covalent

Question 10: Organic compounds always contain ____.

Answer:

Carbon Question 11: When a moving charged particle is placed in a magnetic field, its direction will

_____.

Answer:

change (The charge will feel a force, known as the Lorentz force, which will cause the particle to deviate.)

Question 12: Vitamins B and C are ____ soluble vitamins.

Answer:

water (These vitamins can be easily excreted through the urinary system.)

Question 13: A rock which is exposed to extreme heat or pressure will become a ____ rock.

Answer:

metamorphic

Question 14: 10 inches is equivalent to _____ cm.

Answer:

25.4 (1 inch is 2.54 cm)

Question 15: Microtubules are found in a cell's _____.

Answer:

cytoskeleton (Microtubules help maintain the cell's structure and are involved in many cellular processes.)