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Heat and Pressure
Science 8 Review
Question | Answer |
---|---|
Conduction | when particles COLLIDE (solids and liquids) |
Convection | warm rises, cool falls (liquids and gases) |
Density | how tightly packed atoms are |
does energy take up space? | No! It has no mass or volume |
High density | tightly packedparticles and object will sink |
How does heat move? | from WARM to COLD until both are equal temperatures |
is energy matter? | NO |
Low density | particles are spread out and object floats |
pressure | a pushing force caused by collisions |
radiation | WAVES of heat energy (empty space) |
temperature | average speed of moving particles |
what happens when an object cools down? | the space between the particles SHRINK |
what happens when something is heated up? | the space between particles EXPAND |
what happens when you add heat to particles? | the move FASTER |
when can you see energy? | when it moves things. (matter) |