SCIENCE ROOLS Word Scramble
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Question | Answer |
Define parrallel circuit. | a circuit that has 2 or more separate paths for electtrons. |
define mixture. | when 2 pure substsanes are commined so that each substances retains its own properties. |
where is the strongest magnetic field located? | magnetic poles. |
list 4 examples of alternative energy resources. | wind, solar, water, bionmass. |
what is the law of cconservation of matter? | matter cannot be created or destroyed, it can only change forms. |
how are the freezing point and the melting point of a sustance related? | the freezing point of a substance is the same as the melting point of the same substace. |
define chemical property. | a characteristic of matter that allows it to change to something new. |
where electrons located in the atom? | in the energy levels of an atom around the nucleus. |
define inertia. | the tendency of an object to resist a change in motion. |
list and define each type of friction. | static-prevents an object from moving. sliding-slows down an object that slides. rolling-occurs when an object rolls across a surface. |
define potential energy and give an example. | energy and object has due to its position. Ex:stretched rubber land. |
define lever. | a bar that is free to pivot about a fixed point. |
define heat. | thermal energy transferred from one object to another because of a difference in temperature. |
list the electromagnetic wave in order, starting with longest wavelength. | radio-mico-infrared-visible light-ultraviolet-xray-gamma. |
through which media does sound travel fastest? | solid. |
define transparent and give and example. | object that allow nearly all the light that strikes them to pass through. Ex:glass. |
define circuit. | the steady flow of electrons through a conductor. |
list 3 characterics of nonmetals. | Gases at room temperature. Bad conductors of heat. Bad conductors of electrity. |
why do object float? | the density of the object is less than the density of the liquid it is in. |
list 3 examples of physical changes. | melting, evaporating, and solidifying. |
what do you need to know to describe velocity? | speed & direction. |
define balance force. | forces that are equal in size but opposite. |
what is Newton's 3rd Law? | for every action, there is an equal but opposite reaction. |
define inclined plane. | A slanted surface used to raise and object. |
define wedge. | an inclined plane with one or two sloping sides. |
define convetion and give an example. | transfer of thermal energy by the movement of particles. Ex:boiling water. |
how are sounds produce? | a vibrating object. |
define wave. | rhythmic disturbance that carries energy, NOT matter. |
Why are atoms electricity neutral? | there are equal number of protons & electrons. |
How do magnets atrract one another? | opposite attract->north pole of one magnet attract south pole of another. |
what kind of energy does a buring fire produce? | radiant & thermal. |
list 3 characteristics of metals. | solid at room temperature(execpt mercury). good conductors of heat electricity. malleable & ductile. |
where is the mass of an atom found? | in the nucleus: the protons & neutrons. |
what is the equatin for speed? | speed = distance/time. |
what is Newton's 1st Law? | object remains at rest or in motion unless a net force act on it. |
what does a circuit breaker do? | a device designed to open an overloaded circuit & prevent overheating. |
list 3 ways work is done. | pushing something. pulling something. lifting something. |
define series circuit. | a path created for a current that allows only one route for the current. |
What is a simple machine? list all types. | a device that does work with only one movement & changes the size or direction of a face. lever-wedge-pulley-screw-wheel & axle-inclined plaine. |
define electric current. | the flow of electric charge. |
what is power? | the rate at which work is done. |
define loudness. | the human perception of the energy a wave carries. |
liat 3 examples of heterogeneous mixture. | vegetable soup. italian salad dressing. chocolate chip cookies. |
define mechanical advantage. | the amont by which a machine multiplies an input force. |
list 3 examples of physical prpoerties. | shape. size. density. |
define compound machine. | when two or more simple machines work together. |
how do you calculate density? | density=mass/volume. |
define radiation and give an example. | transfer of energy by electromagnetic waves. Ex:information lamps at restaurants. |
list 3 examples of chemicals properties. | ability to burn. ability to react with oxygen. toxicity. |
define air resistance. | upward force acting on an object falling through the air. |
define static charge. | the buildup of electric charges on an object. |
define matter. | anything that has mass & takes up space. |
list 3 examples of chemical charge. | burning paper. digestion of a hamburger. iron rusting. |
on a speed-time graph, what does a horizontal line show? | shows the change in speed is zero. |
define momentum. | a measure of how hard it is to stop an object. |
what is Newton's 2nd Law? | force = mass x acceleration. |
whhat happens to materials when they get hot? | they expand. |
define rarefraction. | a place where molecules are far apart. |
define reflection. | when light bounces off a surface. |
what is the speed of the EM wave? | 300,000 km/s. |
define wave frequency. | the number of waves that pass a certain point in one second. |
define medium. | the material in which a wave travels. |
why do objects appear red? | thay absorb all colors but red, which is reflected. |
define refraction. | when waves change speed when they pass from one medium into another. |
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baseball fanatic
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