ASVAB Test 16 - Science

The ocean current that extends from Florida across the Atlantic Ocean to Europe is __________. El Nino. the Japan Current. the Gulf Stream. the Southwest countercurrent.

The temperature of the atmosphere is less during the nighttime hours because __________. the side of the earth not feeing the sun loses heat by convection. the side of the earth feeing the sun loses heat by evaporation. the side of the earth not feeing the sun loses heat by radiation. people set their thermostats lower when they go to bed.

The basic unit of heat is the calorie, which is the amount of heat needed to __________. raise the temperature of one ounce of water one degree Fahrenheit. raise the temperature of one gram of water one degree Celsius. change the temperature of one kilogram of water one degree Kelvin. lower the temperature of one quart of water one degree Celsius.

When atoms and molecules pass thermal energy by direct contact, it is known as __________. conduction. convection. insulation. swapping paint.

The speed of light in a vacuum is about __________. 186,000 miles per hour. 186,000 kilometers per hour. 186,000 miles per second. 186,000 feet per second squared.

When a plant performs photo synthesis, it produces __________ as a byproduct. carbon dioxide. oxygen. water. methane.

A person's appearance resulting from his or her genetic makeup is called his or her __________. genotype. individual apparent mutation. phenotype. source of heredity.

Which is the correct and complete sequence of objects in the solar system moving outward from the sun?. Mercury, Venus, Earth, asteroid belt. Mars, Jupiter. Mars, asteroid belt, Jupiter, Saturn, Neptune. Mars, asteroid belt, Jupiter, Saturn, Uranus. Mars, asteroid belt, Saturn, Jupiter, Neptune.

What is the type of blood vessels called that carries blood from the other parts of the body to the heart?. Capillaries. Veins. Arteries. Aortas.

Spiders are __________. marsupials. insects. arachnids. annelids.

A substance that speeds up chemical reactions is a(n) __________. accelerator. adipose. compound. catalyst.

Which of the following is not usually a gas at room temperature?. Oxygen. Fluorine. Sulfur. Argon.

What are the major layers of Earth's atmosphere in order from the Earth's surface upward?. Troposphere, stratosphere, mesosphere, thermosphere, exo sphere. Troposphere, stratosphere, ionosphere, exo sphere. Troposphere, tropopause, ionosphere, stratosphere, exo sphere. Meso sphere, stratosphere, troposphere, tropopause.

What are chloroplasts?. Structures found in plant cells that assist in photo synthesis. Organelles found in plant cells that conduct photo synthesis. Substances found in primitive cyanobacteria. Substances found in green plants only after they blossom.

What is the scientific study of human culture called?. Sociology. Archaeology. Anthropology. Scientology.

Humans have ____ pairs of chromosomes. 13. 23. 46. 47.

The average distance of the Sun from the Earth is about __________. 240,000 miles. 10 million miles. 93 million miles. 240 million miles.

What is the smallest part of matter that retains the chemical properties characteristic of a particular element?. Isotope. Molecule. Electron. Atom.

A gamete is a cell that __________. fuses with a zygote during fertilization. provides nutritional support to a developing fetus. fuses with another gamete during fertilization. fuses with a spermatid before fertilization.

The nucleus of an atom consists of __________. protons, which have a positive electrical charge, and neutrons, which have no charge. electrons, which have a positive electrical charge, and neutrons, which have no charge. protons, which have no electrical charge, and neutrons, which have a positive charge. protons (positive charge), electrons (negative charge), and neutrons (no charge).

Antibodies __________. identify and neutralize foreign objects inside the body. bond with antigens to keep the body's hormones balanced. prevent infection by blocking access to the circulatory system. are produced by the endocrine system.

A lens surface that is __________ bulges outward from the lens, while a lens surface that is __________ is depressed into the lens. planar, convex. concave, convex. convex, concave. orthogonal, planar.

Electrons have a __________ charge. positive. negative. neutral. variable.

The four forces that act on an aircraft in flight are __________. lift, thrust, friction, and inertia. lift, gravity, thrust, and drag. thrust, vector, speed, and fluid density. lift, downdraft, thrust, and vector.

The particle with a __________ charge in the nucleus of an atom is a(n) __________. positive, electron. positive, proton. negative, neutron. neutral, positron.

What is the scientific notation for 832,000?. 8.33 ֳ— 10. 8.34— 10. 8.32 ֳ— 10 -5. 8.32 ֳ— 10.

__________ is the reason it is harder to stop a baseball flying at 100 MPH than it is to stop a baseball flying at 50 MPH. Velocity. Momentum. Mass. Volume.

Which of the following ecosystems could be described as housing thousands of species and has tall trees that form a ceiling from the the Sun above?. a deciduous forest. a tropical rain forest. a tundra. a taiga.

Via which of the following unoxygenated blood travels to the heart?. arteries. veins. capillaries. aorta.

In vertebrates, which substance gives red blood cells their color?. carotene. dopamine. melanin. hemoglobin.

How many different elements are present in glucose, C - H- O-. 1. 3. 5. 7.

On the pH scale, any substance below what number is considered acid?. 0. 5. 7. 15.

Which of the following structures has DNA?. a double helix. a helix. a parabola. a hexagon.

Which of the following plants lacks a vascular system?. fern. peanut plant. liverworts. oak tree.

Which of the following symbols represents one of the elements present in NaCl?. C. Na. NH. N.

Heparin is an anticoagulant. What is the primary purpose of drugs like Heparin?. to cause nausea. to prevent the heart from stopping. to cause drowsiness. to prevent the blood from clotting.

Which of the following is an organic compound?. salt (NaCl). glucose (C O ). potassium (K). water (H O).

What is the latitude of any point on earth's equator?. 0. 90. 180. 270.

What does an anemometer measure?. temperature. wind speed. humidity. air pressure.

Ten thousand centimeters equals __________ kilometers. 0.001. 0.01. 0.1. 1.

At which temperature would water freeze if recorded on a Fahrenheit thermometer?. 32 degrees. 15 degrees. 0 degrees. 21 degrees.

What blood type is considered the universal recipient?. B. O. AB. A.

During its circulation throughout the body, blood from the left ventricle then goes to which of these locations?. left atrium. right atrium. aorta. pulmonary artery.

Which of these substances has the lowest pH?. baking soda. lemon juice. water. bleach.

Which color of visible light has the lowest frequency?. yellow. red. indigo. violet.

The energy possessed by a moving object is called __________ energy. acceleration. potential. kinetic. true.

Which part of the atom helps determine its atomic number?. neutron. electron. anion. proton.

Which part of the brain is responsible for involuntary actions such as breathing and heart beat?. cerebrum. medulla. pons. cerebellum.

Of these options, which is the most specific category of biological classification?. genus. phylum. domain. species.

Which of these is not a unit of length?. cubic centimeter. millimeter. kilometer. meter.