General Science
Physical, biological, and earth/space science concepts drawn from a typical high-school science curriculum.
~8m
Practice this sectionPractice Questions
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Spiders are
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A substance that speeds up chemical reactions is a(n)
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Which of the following is not usually a gas at room temperature?
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What are the major layers of Earth's atmosphere in order from the Earth's surface upward?
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What are chloroplasts?
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What is the scientific study of human culture called?
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Humans have___pairs of chromosomes.
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The average distance of the Sun from the Earth is about
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What is the smallest part of matter that retains the chemical properties characteristic of a particular element?
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A gamete is a cell that
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The nucleus of an atom consists of
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Antibodies
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A lens surface that is______________bulges outward from the lens, while a lens surface that is_______________is depressed into the lens.
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Electrons have a ___________________charge.
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The four forces that act on an aircraft in flight are
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The particle with a_____________charge in the nucleus of an atom is a(n)____________
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A series of cell divisions that results in the formation of an embryo is called:
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An animal that eats only plants is called a(n):
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The process by which energy is provided at the cellular level is called:
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All of the following are domains except:
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Light waves travel at a rate of about:
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The largest moon in the solar system is:
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The spinal cord is part of the:
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Joints that hold bones firmly together are called:
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The top or broadest level of the classification system for living organisms is called:
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If there are two full moons in a single month, the second full moon is called:
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The brainstem connects the brain to the:
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Red blood cells:
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Protein can be found in all of the following foods EXCEPT:
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Which inorganic substance is present in the greatest quantity inside animal cells?
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Cell protoplasm is made up mostly of:
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In what year did the first woman travel in space?
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A step-up transformer:
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What animal has the heaviest brain?
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Passing sunlight through a prism:
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Molecules are created when:
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The first genetically engineered organism was:
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The vernal equinox is:
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The moon completes a revolution around the earth approximately every:
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Carcinogens are chemicals that cause:
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A paramecium is:
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What large halogen is essential for the function of the thyroid gland?
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Muscles attach to bone with:
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Atoms are most tightly packed in:
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Blood leaving the lungs is:
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The longest river in the world is:
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A meter consists of:
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It's impossible for the sun to turn into a black hole because:
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Electrons are particles that are:
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The chamber of the heart that pumps blood to the lungs is called the:
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The atomic number of an atom is determined by:
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The smallest part of an element that still acts like an element is:
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Mitosis is a process of:
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When added to a cloud's name, which of the following means rain?
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The movement of particles from an area of high concentration to an area of lower concentration is called:
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The instrument used to measure wind speed is:
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Electric charges can be:
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Which planet in the solar system has the most moons?
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Hydrogen has the atomic number 1. This means that hydrogen has:
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Which U.S. space program is responsible for putting 12 men on the moon?
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Organisms that eat other organisms are called:
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Unlike most other fish, sharks have no:
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What human organ is responsible for cleaning the blood?
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Kinetic energy is the energy that:
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The brainstem controls:
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What element is the most abundant one in the atmosphere?
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Minerals are necessary for:
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How many planets in the solar system have rings?
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The temperature at which a solid becomes a liquid is its:
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The surface of the earth is called the:
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Not counting the sun, the closest star to the Earth is:
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The ovaries produce:
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An earthquake that measures 4 on the Richter Scale would be how many times stronger than an earthquake that measured 2?
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Absolute zero is:
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What does the term forensic mean?
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Which of the following statements is not true?
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A lunar eclipse occurs when:
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What chemical can be used to detect blood, even if it's been wiped from a surface?
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The function of an enzyme is to
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The DNA of a cell is found mainly in its
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Most cells without a cell wall also lack
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The cells that can easily be scraped from the lining of the mouth make up
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What theory suggests the Universe will come to an end when its ever-increasing rate of expansion causes all matter to fly apart?
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A watt measures:
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Which of the following planets, known as gas giants have no rings?
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Gas particles move:
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The___________of an isotope is the time in which it takes half of an initial amount of an isotope to decay into something else.
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The end produces) of protein digestion consists) of
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Which of the following isn't a type of telescope?
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A dekagram:
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The Aurora Borealis can be seen only in the:
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The three important properties of sound waves are:
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Between what two planets can most of the asteroids in the solar system be found?
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At room temperature, an element is a:
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The elements hydrogen and helium comprise what percentage of almost all matter in the Universe?
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Compounds are created when:
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Blood circulation from the lungs goes directly to the
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The glucose content of the blood is regulated by
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Erosion and depletion are problems associated with
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The beneficial relationship between termites and the protozoa that inhabit their digestive systems is called
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A viral infection in humans that has a very long time between the initial exposure and the exhibiting of symptoms is
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Which substance can be used to treat drinking water of questionable purity?
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The number of atoms in a molecule of CuS()4 · 51 h is
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The reaction between sodium, metal, and water can be classified as
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Nitrates are very useful as
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A gaseous product of the fermentation of sugar is
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The half-life of iodine-131 is 8 days. Approximately how long would it take for 1 milligram of 1-131 to decay to 1/2 milligram of 1-131?
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A magnetic compass points in the direction of the
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The mass of 1 cubic meter of water is approximately
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A 1-kilogram mass is dropped from a height of 1 meter. Its kinetic energy just before it hits the ground is
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A magnifying glass is what kind of lens used on objects how far away?
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Frictional forces usually do NOT
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A 120-volt electrical power supply produces 1/2 ampere to the load. The power delivered is
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The temperature of the atmosphere Ms during the nighttime hours because
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The basic unit of heat is the calorie, which is the amount of heat needed to
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The speed of light in a vacuum is about
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When a plant performs photo synthesis, it produces____________as a byproduct.
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A person's appearance resulting from his or her genetic makeup is called his or her
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Which is the correct and complete sequence of objects in the solar system moving outward from the sun?
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What is the type of blood vessels called that carries blood from the other parts of the body to the heart?
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