Science Crossword Puzzles

the _ happened 13.7 billion years ago when time, space, matter, and energy began to exist, the universe as we know it today began as a hot, dense …

structures in the nose that filter air, first chamber blood enters from the body, cartilage tube lined with cilia and mucous; epiglottis is flap that …

anything that has mass and takes up space, when two or more substances are together in the same place but are not chemically bonded, two or more atoms …

the flow of electrical charge, often through materials like wires, a complete path that allows electricity to flow, including a power source, wires, …

external, protective coating that protects the body systems from the outside elements, collection of similar cells that perform a particular function, …

exaggerated reaction (sneezing, difficulty breathing, itching, or skin rashes), a respiratory condition causing difficulty in breathing; usually …

the temperature at which liquid turns to a solid, the temperature at which a liquid boils and turns to vapour, breakability or flexibility, shininess …

study of the very small, mass multiplied by velocity, the energy dependent on the object's position, the energy that includes both potential and …

surface resistance to relative motion, as of a body sliding or rolling, the force of attraction by which terrestrial bodies tend to fall toward the …

of or relating to the stars, everything that exists, including objects and energy, throughout time and space, a blocking of the sun's light that …

involuntary discharge of urine, inflammation of the bladder often marked by painful urination, dilation of the collecting system of the kidney because …

substances that can't be broken down, a force that causes a bird to rise in the air against each other, a stream of electrical charges, a …

energy that is transferred from one body to another as the result of a difference in temperature, degree of hotness or coldness of an object, heat …

transfer of heat by physical contact, an organism that relies on external sources of heat to regulate its body temperature, regulate body temperature …

last name of the scientist who named "cells", scientific tool that allows us to examine tiny cells, jelly-like substance that surrounds the …

has a mass of only between 1.35 and about 2.1 times that of our sun, it is 60,000 times smaller than the sun, "failed stars", which form …

newton's _ law of motion: "an object in motion will continue in motion unless acted on by an unbalanced force.", the force that pulls …

a component that is dissolved and which is present in lesser amount, universal solvent, mixtures having a uniform composition throughout their bodies …

co2 released into atmosphere from burning, decomposers break down carbon from dead organisms, co2 released into the atmosphere as waste from …

a ratio expressed as a fraction that equals one, the ratio of the actual yield to the theoretical yield of a material, the volume occupied by 1 mole …

this system starts in the mouth, helps movement of the body, maintaining posture, and circulating blood throughout the body, system that consists of …

a material through which electricity does not flow, a circuit with more than one path for an electric current, a moving electrical charge, a circuit …

hold tissue, blood vessels, or other structures securely during surgical procedures. temporarily occlude or close off blood vessels. control bleeding. …

1 atm pressure, liquid water always changes to gaseous water at 100 degrees celsius, a measure of the random motions of the components of a substance, …

an idealized object that absorbs all incident electromagnetic radiation and emits radiation in a characteristic spectrum that depends only on its …

a sub atomic particle with a positive charge, an element with the symbol k, the number of electrons that will be an atom which has 12 protons, the …

involved in biological rhythms, responses to the water and salt imbalance, develops t cells, stimulates the thyroid gland, stimulates the metabolism, …

earth's only natural satellite, the force that holds stars in a galaxy together, the time it takes light to reach earth from the sun, a measure …

a hypothesized for of energy, believed to be responsible for the universe's every increasing rate of expansion, a star formed from a cloud of …

the amount of matter or stuff that makes up and object, the state of matter in which the molecules slide past each other and move at a medium speed, …