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Earth Science Ch. 2
Ch. 2 Test
| Question | Answer |
|---|---|
| Matter | is anything that occupies space and has mass |
| How is the plasma state of a substance different from the gas of the same substance? | The particles in plasmas and gases are far apart and move very fast, but the particles collide so hard that they break apart and come electrically charged. |
| Water vapor becomes liquid water droplets | condensation |
| molten steel hardens | solidification |
| on a cold, clear night, ice forms on the windshield of your family car | deposition |
| a block of dry ice slowly disappears | sublimation |
| a breaker of liquid oxygen, bubbles and forms oxygen gases | vaporization |
| Name three ways to measure matter | mass, weight, volume |
| Force | is a push or pull |
| What are the two types of forces? How are they different | Contact and Field. Contact forces are exerted only on objects that touch. Field forces can be exerted on objects that are by distance. |
| lightning is responsible for the force | electrical |
| sand wearing away rock as water flows over the rock is responsible for the force | friction |
| increasing pressure as you go deeper into the ocean is responsible for the force | compression |
| a chunk of a glacier falling off into the ocean to form an iceberg is responsible for the force | gravity |
| a rope holding up a cave explorer is responsible for the force | tension |
| a landslide is responsible for the force | gravity |
| True or False: Your feet exert a compressive force on the ground where you stand | true |
| How would a scientist define work | the result of a force acting on an object as it moves through a distance |
| energy | is the ability to do work |
| What happens to an object's energy when work is done on it | an objects energy increases when work is done on it |
| Piano releases | sound energy |
| toaster releases | thermal energy |
| a computer monitor screen releases | light energy |
| static on a sweater releases | electrical energy |
| food releases | chemical energy |
| True or False: an avalanche of rocks is dangerous because of the huge amount of kinetic energy it develops as the rock falls | true |
| Which kind of vaporization can occur at any temperature between the freezing and boiling points of a substance | evaporation |
| true or false: when you exert a force, two forces are actually at work | true |
| true or false: magnetism is the most important field force in geology | false |
| true or false: mechanical energy is always related to a force | false |
| true or false: the most common state of visible matter in the universe is the solid state | false |
| Would more work be done lifting a box from the floor to the top of a table, or from the floor to a shelf above your head? Why? | More work is done lifting the box to the shelf. The force exerted is the same in either case, but the distance is farther from the floor than the shelf. |