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53 Cards in this Set
- Front
- Back
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What transfers energy without transferring matter?
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Waves (microwaves, sound waves, etc.)
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What are the 5stages of cell reproduction?
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Prophase, metaphase, anaphase, telophase, and cytokinesis
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How is the frequency of a wave measured?
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By vibrations per second
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What 3 things can light do when it hits a surface?
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Light can be reflected, absorbed, or scattered.
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In order for us to hear a sound, what must it do?
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Travel through something so that its molecules vibrate
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How is a compound formed?
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A compound is formed when 2+ elements unite chemically
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How is a solution formed?
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When compounds or elements are dissolved in another substance
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What is the difference between weight and mass at rest?
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Mass at rest is the same everywhere, whereas weight can change depending on location
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What is Newton's First Law of Inertia?
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A body at rest stays at rest until acted upon by an outside force.
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What is Newton's Third Law of Conservation of Momentum?
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For every action there is an equal and opposite reaction.
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What is work and how is it measured?
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Work is the movement of something by force, measured by power in foot-pounds.
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How is heat measured?
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In calories
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Is the transfer of heat by physical contact conduction, convection, or radiation?
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Conduction
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What does temperature measure?
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How fast molecules are moving in a substance
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True or False: With electricity, like charges attract and unlike charges repel.
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False. Like charges repel and unlike attract.
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What 3 units are used to measure the flow of electricity?
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Volt, amp, and ohm
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What 2 substances can produce magnets?
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Magnetite and iron
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Where is Earth's magnetic north?
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Northeastern Canada, not the North Pole
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What 3 types of energy do radioactive material release?
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Alpha, beta, and gamma rays
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What are the 4 stages of an insect's metamorphosis?
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Egg, larva, pupa, adult
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How are the plant groups angiosperm and gymnosperm different?
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Angiosperm have flowers & leaves; gymnosperm have no flowers & needles for leaves.
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How are bacteria helpful?
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Bacteria help dead, organic material decompose.
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The sea provides____% of the world's protein and ___% of the world's petroleum.
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25% of protein & 15% of petroleum
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What is the smallest unit of life that can reproduce?
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A cell
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Through which process does the sun create energy?
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Fusion
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What is the relationship between an ecosystem and an organism?
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Organisms interact with and adapt to the ecosystem in which they live.
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What are the 5 parts of the earth, beginning with the inner core?
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Inner core, outer core, mantle, crust, atmosphere
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The earth's surface is being destroyed, or is _____, which begins with______.
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Eroding, weathering
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What makes up the earth's atmosphere?
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Nitrogen (78%) and oxygen (21%)
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What percent of the earth's surface is water?
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75%
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How is new land created?
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Hot magna coming to the surface and land masses being pushed up from below
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What are protons, neutrons, and electrons?
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The three subatomic particles in atoms
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Matter exists in what 3 forms, all of which can change?
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Solid, liquid, and gas
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Through which process does the sun create energy?
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Fusion
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What comprises our solar system?
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The sun, 9 planets, comets, moons, asteroids, and meteors
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What happens to subdominant organisms in an ecosystem?
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They adjust or migrate or die.
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In what two ways are plants different from animals?
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Plants have cells with rigid walls, chlorophyll, & don't have a nervous system.
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How does the immune system prevent the spread of disease?
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It destroys disease-causing agents (antigens).
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What is the difference between red and white blood cells?
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Red carry oxygen; white are part of the immune system
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What carries genetic information in cells, packaged in the form of chromosomes?
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DNA
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Plants harness sunlight to make food and produce oxygen for us to breathe during...
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Photosynthesis
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Place these eras in the time of their occurrence: Paleozoic, Cenozoic, Mesozoic.
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Paleozoic (570 mil. years ago), Mesozoic (225 m.y.a.), Cenozoic (65 m.y.a.)
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Living things are classified into how many kingdoms?
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Six kingdoms, 3 for one-celled living things and 3 for multicelled eukaryotes
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What creates our weather?
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The movement of air mass and the pressure systems it creates
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What creates day & night on Earth and what creates the seasons?
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Rotation (day and night) and revolution (seasons)
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What is the significance of the geological Permian and Triassic periods?
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Earth's land was one mass during the Permian period, which split into 2 during the Triassic period.
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When did early sapiens and modern Homo sapiens develop?
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250,000 years ago; 75,000 years ago
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What is the significance of the pituitary gland, adrenal glands, and thyroid?
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They are part of the endocrine system that produces & distributes hormones?
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Do plants or animals use oxygen and give off carbon dioxide?
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Animals. Plants do the opposite.
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What single-celled organism was the first organism to develop?
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Bacteria
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What parts of the flower contain the female and male reproductive organs?
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The pistil (female) and the stamen (male)
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What is the order of the plants, beginning with Mercury?
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Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
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What are nerve cells that receive stimuli and transmit to and from the brain and spinal cord?
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Neurons
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