Science Crossword Puzzles

a chair has four of these. you have two, people often get these pierced, you have 32 of these and you use them to eat, you use this part of the body …

binary _ _ _ _ _ _ _ , in meiosis the number of chromosomes are _ _ _ _ _ _ _ by half, sexual reproduction occurs in a _ _ _ _ _ , phase of mitosis …

this happens to the surface of an alkali metal when it reacts with oxygen, this gas is produced when an alkali metal reacts with water, sodium _ into …

strand of dna or rna surrounded by a layer of protein that can infect and replicate in a host cell, long whiplike structure on bacteria, a mixture …

the concentration of water vapour in the air (8 letters), the process of breaking down food to release energy in plants and animals (11 letters), the …

a tube that is held open by c-shape rings of cartilage; connects the larynx and the bronchi, the organ of the lymphatic system in which t cells …

muscle that helps your lungs pull in air and push it out, muscular tube through which food passes from the pharynx to the stomach, tiny air sacs in …

what theory did he develop?, whose house did he threaten to burn down?, what type of math did he develop?, who said he was the smartest person to ever …

evaporation of water from the surface of a leaf, the movement of water from an area of high to low water concentration through a semi-permeable …

process of transporting sugars and other organic compounds in the phloem, organ where photosynthesis primarily occurs, plant organ or tissue that …

immovable joints (pl.), slightly movable joints (pl.), freely movable joints (pl.), "bone-makers" (pl.), "bone-breakers" (pl.), …

energy that gives us power, when there are more positive charges, magnets have a _ and south pole, when equal forces act on an object, sign for …

the kind of birds that darwin noticed on the galapagos islands, blend in with surroundings, any variation that makes an organism better suited to its …

the innermost planet, mercury is the smallest planet, mercury doesn't have any, how many earth days is one year on mercury, mercury has no-, …

a reaction that absorbs energy, a reaction that releases energy, a substance that can increase the rate of a reaction without being used up, the …

describes materials that allows some light to pass through, but not all, bending of light, describes materials that do not let any light pass through …

the change of state from solid to liquid, the state of matter where particles move fastest, the state of mater where the particles are fixed in …

elements found on the left-hand side of the staircase, elements found on the right-hand side of the staircase, the name given to the group 7 elements, …

total number of protons and neutrons, a uncharged particle in an atom, an ion of the element with 16 protons, the electrons on the outermost energy …

a mixture that does not appear to be the same throughout, a mixture that appears to be the same throughout, uses the physical property of size to …

used to measure mass of an object, used to grab hot beakers, test tubes, and other equipment, measures precise liquid (2 words), protects your eyes (2 …

combination of two substances, anti-pollution masks are based on this separation method, ability of a substance to dissolve in a liquid, time off that …

distinct forms or conditions in which matter can exist, something that is firm and stable in shape, transition of a substance directly from the solid …

a region of space having a gravitational field so intense that no matter or radiation can escape, the displacement of spectral lines toward longer …

functional unit of the kidney responsible for urine formation, the process of removing waste and excess substances from the blood in the glomerulus, …

a gas that can make balloons float or explode into a fiery mess, most wires are made of this metal, common radioactive element referred to in movies, …

can cause cancer, lung damage, and immune system failure, this chemical takes years to leave the body, chemical that is a major part of gasoline, …

allows the neuron to conduct electrical impulses down to another neuron, or any type of cell by the release of signals into the synapse, protect the …

organelle highly present in b cells to produce antibodies, fluid in which pathogens are carried to lymphocytes, the site at which somatic …

this chronic condition inflames and irritates your digestive tract, the first part of the small intestine, a procedure that uses a flexible, lighted …