Woodruff-8th grade test- physical science
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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| Matter | anything that has mass and takes up space
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| Mass | amount of matter in an object
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| Volume | the amount of space an object takes up
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| 4 phases of matter | solid, liquid, gas, plasma
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| Phase change- gains heat | melting and evaporation
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| Phase change- loses heat | condensation and freezing
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| Elements | basic building blocks of matter
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| atom | smallest particle of an element
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| compound | two or more elements
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| 3 parts of an atom | proton, electron, and neutron
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| proton- type of charge | positive
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| neutron- type of charge | neutral
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| electron- type of charge | negative
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| Elements are organized by their ____ on the periodic table | properties
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| On the periodic table _____ are the vertical columns | groups
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| ____ are the horizontal columns on the periodic table | rows
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| In the periodic tables ____ are to the left of the staircase | metals
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| In the periodic tables ____ are to the right of the staircase | nonmetals
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| molecule | smallest part of a compound
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| Two types of bonds that bind molecules together | ionic and covalent
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| mixtures | when two or more substances are put together and do not make a new substance
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| solution | undisturbed mixture containing solute and solvent
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| solute | part of a solution that gets dissolved
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| solvent | part of a solution that does the dissolving
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| density | mass divided by volume
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| density of water | 1 gm per cubic centimeter
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| If an object has a density of more than 1, it will (float, sink) | sink
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| If an object has a density of less than 1, it will (float, sink) | float
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| buoyancy | ability to float
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| _____ changes alter size and shape of an object | physical
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| ____ change creates a new substance | chemical
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| In a chemical equation, the (reactants, products) are on the left | reactants
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| Law of Conservation of Matter | Matter cannot be created nor destroyed- only changed from one form to another
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| force | push or pull
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| weight | the amount of gravitational pull on an object
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| speed | distance/time
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| velocity | distance/time with a direction
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| acceleration | final velocity-starting velocity/time
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| Newton's First Law of Motion | an object at rest will stay at rest and an object in motion will stay in motion unless an outside force acts on the object
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| Newton's Second Law of Motion | Force/Mass or Force x Mass= acceleration
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| Newton's Third Law of Motion | For every action there is an equal and opposite reaction
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| Work | Force x Distance
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| Machine transfers ____ energy | mechanical
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| resistance | force it much overcome
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| effort | force applied
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| fulcrum | pivot point
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| list six simple machines | lever, pulley, wheel and axle, screw, wedge, inclined plane
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| energy | ability to do work
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| potential energy | stored energy
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| kinetic energy | energy of motion
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| Light and sound travel in forms of ____ | waves
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| wavelength | distance from crest (top) to crest
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| amplitude | height of the wave
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| frequency | the number of waves that pass a given point in a certain time
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| heat is produced by _____. | vibrating molecules
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| Addition of heat causes | expansion
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| Loss of heat causes | contraction
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| heat travels from ____ to ____ | warm, cold
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| 3 ways heat moves | radiation, conduction, convection
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| Movement of heat through space is called _____ | radiation
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| Movement of heat through a liquid or gas is called _____ | convection
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| Movement of heat through a solid is called _____ | conduction
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| law of magnetic poles- like poles will ____ and unlike poles will ____ | repel, attract
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| electricity | produced by the flow of electrons from one point to another
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| Allow electricity to flow through it | conductors
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| Do not allow electricity to flow through | insulators
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| series circuit | single path
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| parallel circuit | two or more paths
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| If one bulb blows the ____ circuit dies and the ____ still works | series, parallel
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| visible form of energy that travels in paths | light
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| light that is bounced off is called | reflected
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| Light that is taken in and transferred is called | absorbed
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| Light that goes right through is called | transmitted
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| bending of light | refraction
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| Dark or light surfaces absorb more light | dark
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| A concave lens curves (inward, outward) | inward
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| A convex lens curves (inward, outward) | outward
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| Shows the frequency and wavelengths of light waves | electromagnetic spectrum
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| calorie | unit for measuring energy in food and fuel
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| watt | rate at which energy is used over a period of time
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| hydroelectric energy | electricity produced by the power of flowing water
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| nuclear energy | energy stored in the nucleus of an atom
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| Splitting uranium releases ___ energy and creates ____ and ____. | heat, thermal pollution and nuclear waste
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| List three problems with fossil fuels | pollution, acid rain, lung disease, oil spills, and the greenhouse effect
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| conservation | the saving of natural resources through wise use
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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.
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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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