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100 Cards in this Set
- Front
- Back
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insulator |
a material that is a poor conductor of heat and electricity |
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volume |
the measure of how much space an object takes up |
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weight |
a measure of how strongly gravity pulls on an object |
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solution |
a mixture of substances that are blended so completely that the mixture looks the same everywhere |
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satellite |
a natural or artificial object in space that circles around another object |
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vertebrate |
an animal that has a backbone |
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decomposer |
an organism that breaks down dead plants and animals into simpler materials that enrich the soil |
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producer |
an organism that uses the sun's energy to make its own food |
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matter |
anything that has mass and takes up space |
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vegetative propagation |
asexual reproduction in plants that produces new plants from roots, leaves, or stems |
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nonvascular |
containing no plant tissue through which water and food move |
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vascular |
containing the plant tissue through which water and food move |
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multicellular |
having many cells |
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unicellular |
having only one cell |
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magma |
hot, melted rock below Earth's surface |
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mimicry |
an adaptation in which an animal is protected against predators by is resemblance to another |
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invertebrate |
an animal without a backbone |
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omnivore |
an animals that eats both plants and animals |
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herbivore |
an animals that eats only plants |
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carnivore |
an animal that eats only other animals |
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lava |
melted rock that reaches Earth's surface |
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revolution |
one complete trip of one object around another object |
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consumer |
an organism that eats other organisms |
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asymmetrical |
something that cannot be divided into mirror images |
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energy |
the ability to perform work or to change an object |
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pollution |
the addition of harmful materials to soil, air, or water |
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density |
the amount of matter in a certain volume of a substance |
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mass |
the amount of matter in an object |
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humidity |
the amount of water vapor in the air |
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refraction |
the bending of light waves as they pass from one substance into another |
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marsupial |
a mammal in which the female has a pouch where offspring develop after birth |
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monotreme |
a mammal that lays eggs |
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placental mammal |
a mammal whose young develops within the mother |
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element |
a material that cannot be broken down into any simpler substance
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conductor |
a material that easily transmits heat energy and electricity |
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asteroid |
a rock that revolved around the sun |
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solar system |
a star and the objects that orbit around it |
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solvent |
a substance that is dissolved by another substance to form a solution |
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solute |
a substance that is dissolved by another substance to form a solution |
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compound |
a substance that forms by the chemical combination of two or more elements |
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rotation |
a complete spin on an axis |
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prism |
a cut piece of clear glass or plastic that bends light |
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fault |
a deep crack in Earth's crust |
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anemometer |
a device used to measure wind speed |
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gravity |
a force of attraction, or pull, between any two objects |
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friction |
a force that opposes the motion of one object moving past another |
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budding |
a form of asexual reproduction used by some organisms, such as yeast |
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fossil fuel |
a fuel formed from the remains of ancient forms of life |
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isobar |
a line on a weather map that connects paces with equal air pressure |
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organism |
any living thing |
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earthquake |
a sudden shaking of Earth's crust |
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hygrometer |
a tool used to measure the relative humidity in the air
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hydrosphere |
all Earth's solid and liquid water, including oceans, lakes, rivers, glaciers, and the water located underground |
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camouflage |
an adaptation by which an animal protects itself against predators by blending in with the environment |
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solubility |
the maximum amount of a substance that can be dissolved by another substance |
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circulatory system |
the organ system consisting of the heart and blood vessels that moves through the body |
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skeletal system |
the organ system made of bones, tendon, and ligaments |
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digestive system |
the organ system that breaks down food so it can be absorbed into the bloodstream
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respiratory system |
the organ system that brings oxygen into the body and removes waste to gas |
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excretory system |
the organ system that removes cellular wastes from the body |
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sediment |
the particles of solid or rock that may be eroded and deposited |
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food chain |
the path of energy and nutrients in an ecosystem |
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orbit |
the path one object takes around another object |
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mixture |
a physical combination of two or more substances that are blended together without forming a new substance |
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chemical property |
a property that involves how a substance interacts with other substances |
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nonrenewable resources |
a resource that cannot be replaced within a short period of time or at all |
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igneous rock |
a rock formed when magma or lava cools and hardens |
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sedimentary rock |
a rock made of compacted and cemented materials |
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metamorphic rock |
a rock that forms from anther kind of rock under heat and pressure |
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classification |
the science of organizing categories of living things |
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atom |
the smallest unit of an element that retains the properties of that element |
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cell |
the smallest unit of living things that is capable of life |
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velocity |
the speed and direction of a moving object |
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boiling point |
the temperature at which a substance boils |
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freezing point |
the temperature at which a substance freezes |
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intertia |
the tendency of a moving object to keep moving in a straight line or any object to resist a change in motion |
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mantle |
the thick layer of solid and molten rock that surrounds the core |
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crust |
thin layer of solid rock that makes up the outermost layer of earth includes continents and ocean floor |
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absorption |
the transfer of energy when a wave disappears into a surface |
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reflection |
the bouncing of light waves off a surface |
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muscular system |
the body system made of muscles that moves bones |
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nervous system |
the body system that works with other body systems to help organisms respond to stimuli |
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front |
the boundary between two air masses |
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kingdom |
the broadest group into which an organism is classified |
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core |
the central part of Earth that lies beneath the mantle |
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kinetic energy |
the energy of a moving object |
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elastic potential energy |
the energy stored in an object that can stretch or compress |
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chemical energy |
the energy stored in material due to the links between atoms and molecules |
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potential energy |
the energy that is stored in the position or the structure of an object |
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epicenter |
the point on Earth's surface directly above the focus of an earthquake |
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focus |
the point where an earthquake starts |
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conservation |
the preservation or protection of natural resources
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erosion |
the process of carrying away soil or pieces of rock |
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deposition |
the process of droppping off bits of eroded rock |
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pasteurization
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the process of heating foods to high temperatures to slow the growth of bacteria |
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weathering |
the process through which rocks are broken down |
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sexual reproduction |
the production of a new organism from a female sex cell and male sex cell |
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asexual reproduction |
the production of a new organism from one parent |
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force |
the push or pull by one object on another |
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fertilization |
the joining of a sperm cell with an egg cell to make one new cell |
