5 Science Chapter 6
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| force | a push or pull; necessary for motion
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| gravity | the force of attraction that exists between any pair of objects
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| matter | anything that takes up space & has mass & weight
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| contact force | the force that occurs when object pushes against another
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| friction | the force that resists motion
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| lodestones | a piece of naturally magnetized iron ore
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| work | the result of a force moving an object
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| energy | the ability to do work
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| chemical energy | a special form of potential energy stored in the bonds that hold molecules & chemical compounds together; released as heat
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| kinetic energy | energy of motion
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| potential energy | stored energy
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| transfer of energy | occurs when one object gives some or all of its energy to another object
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| engine | a device that converts energy from a natural source into useful work
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| condenser | a device that converts gases or vapors to a liquid state
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| combustion | burning
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| fluid | a substance that can flow from one place to another; such as a liquid or gas
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| cylinder | of an engine, a hollow, cylinder-shaped compartment in which a piston moves back & forth
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| piston | a disk that moves back & forth inside a hollow cylilnder
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| octane number | a number indicating the anti-knock quality of a gasoline
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| turbine | a wheel of curved blades that spins a drive shaft; changes the force exerted by things such as wind or pressurized gases into rotary motion
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| turbofan | a jet engine with a large fan at the very front
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| turboprop | a jet engine used to power a propeller
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| ramjet | a jet engine that can a function only at high speeds because it has no turbine
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| missile | a guided military rocket
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| payload | the cargo that is carried in the nose of rocket
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| attract | opposite poles or charges __________ each other when they are brought close together
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| repel | like poles or charges ________ each other when they are brought close together
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| wind power | sails, windmills & wind turbines are devices that harness this kind of power
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| water wheel | device developed to harness the power of moving water
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| gas and liquids | states of matter that have no permanent shape
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| diffusion | tendency of gases to spread themselves out thinly
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| melting point | temperature at which a solid changes into a liquid
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| freezing poing | temperature at which a liquid changes into a solid
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| 32 | degree Fahrenheit temperature of melting and freezing point of water
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| boiling point | temperature at which a liquid changes into a gas
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| condensation point | temperature at which a gas changes into a liquid
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| 212 | degree Fahrenheit temperature of boiling and condensation point of water
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| diesel | type of internal combustion engine that produces no spark
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| rocket | type of engine that carries its own supply of oxygen
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| oxidants | oxygen rich compounds
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| propellant | fuel & oxidants that combine to form expanding gases which pus h the rocket forward
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| solid fuel rocket | type of rocket that use propellants
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| liquid fuel rocket | type of rocket that burns a liquid fuel after mixing it with a liquid oxygen
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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