Grade 8 Final
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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| How are particles in objects in a solid state? | Packed tightly together in fixed positions
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| How are particles in objects in a gas state? | Spread out and fill all the space available to them
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| How are particles in objects in a liquid state? | Free to move in a container but remain in close contact with one another
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| Melting point | Temperature at which a solid changes into a liquid, and each substance has its own distinct melting point
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| What happens when an inflated balloon is exposed to cold air? | The volume inside the balloon decreases
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| How does heat transfer occur? | Only from warm objects to colder objects
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| How does heat transfer through convection? | When heated air moves from baseboard heaters to the rest of a room
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| Viscosity | The resistance of a liquid of flowing
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| What are examples of chemical formulas? | H2O and CO2
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| What do chemical formulas indicate? | The type and amount of each element in a molecule
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| What does the element's atomic number represent? | The number of protons in that atom
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| What kind of elements are located in Group 1 on the periodic table? | The most reactive metal elements
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| Elements | Substances that cannot be broken down chemically into other substances
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| Mass | The amount of matter in an object
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| How is the volume of a liquid measured? | By using a graduated cylinder
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| Density | The measurement of how much mass is contained in a given volume
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| How do you find density? | Mass/Volume
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| What is burning wood an example of? | Chemical change
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| What are signs of chemical changes? | Change in color, odor, temperature, formation of a precipitate, bubbling/fizzing
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| What is the difference between alloys and pure metals? | Alloys resist corrosion while pure metals corrode (like rusting)
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| Mixtures | When substances are not chemically combined
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| Constraint | Any factor that limits or restricts the design of a technology product
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| Troubleshooting/Redesigning | Process of analyzing and fixing a design flaw
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| Potential Energy | Stored energy
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| Kinetic energy | Energy of matter in motion
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| What do endothermic changes do? | Absorb energy like when ice melts
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| What happens during photosynthesis? | Plants transform electromagnetic energy from the sun into chemical energy
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| Temperature | The measure of the average kinetic energy of the individual particles in an object
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| Gravitational potential energy | Potential energy that depends on height
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| Radiation | The transfer of heat through electromagnetic waves
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| How do you find the average speed? | Distance/Time
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| Motion | When an object's distance from another object is changing
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| Momentum | The product of an object's mass and its velocity
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| Inertia | The tendency of an object to resist change in its motion
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| Acceleration | Change in direction and/or speed
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| Velocity | The speed and direction of an object
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| Reference point | A place or object used for comparison to determine if something is in motion
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| Friction | The force that once surface exerts on another when the two rub against each other
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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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Created by:
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