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Force and motion 7th
Term | Definition |
---|---|
Friction | The rubbing of one object or surface against another. |
Gravity | is a force which tries to pull two objects toward each other. |
Force | an object's mass multiplied by its acceleration |
Work | Force x distance |
phototropism | the way a plant grows or moves in response of light [bends near light] |
gravitropism | the way a plant grows or moves in response to gravity [plants roots grow down stem grow up] |
hydrorpism | the way a pant grows or moves to the response of water[root moves near water] |
thigmotropism | the way a plant grows or moves in response of touch[growing vines] |
Turgor pressure | The pressure exerted on a plant cell wall by water. Hold the stem up. |
tropism is negative when | the plant moves away from the stimulus.. stem towards sky |
tropism is positive when | the plant moves towards the the stimulus roots going down |
tropisms occur | when plants respond to external stimuli |
tropisms | are movements caused by a plants growth pattern |