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Chapter 4 CPOScience
Question | Answer |
---|---|
a group of atoms | molecule |
energy of motion | kinetic energy |
a form of energy caused by the motion of atoms and molecules | heat |
a measure of the average speed of a sample containing lots of atoms | temperature |
The average speed of atoms in a hot object | fast |
The average speed of atoms in a cold object | slow |
a place where electricity is generated | power plant |
Most of the energy used by a light bulb becomes | heat energy |
transfer of heat through the motion of liquids and gases | convection |
transfer of heat by direct contact of atoms and molecules | conduction |
heat transfer that involves energy waves and no direct contact or movement by atoms | radiation |
The Sun’s heat reaches Earth by | radiation |
Most of Earth’s internal heat comes from the | core |
Earth’s surface heat comes from the | Sun |
energy leaves the Sun as radiant energy that is mostly | visible light |
is used to measure the average speed of the atoms in an object | thermometer |