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    hi, i need help with exactly understanding the meaning of rejuvination. my geography teacher has tried to explain it but i just can not see what he means. i understand the outline of it but wouldent feel comfortable to write about it in an exam. any help would be appreciated..
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    A definition of rejuvenation is likely to form part of the answer - a 15 marks
    1 (d)
    renewal of the river’s energy as a result of a relative fall in base level.
    This will lead to a return to vertical erosion. It may be a result of a fall in
    sea level-eustatic change or an increase in the relative height of the land
    in relation to the sea - due to isostatic uplift (the ‘rebound’ following the
    end of glaciation) or due to tectonic activity.
    Landforms - knick point relates to the extent to which the river has
    created a newly graded profile to adjust to the new base level. It is
    identified by a break in slope and is usually marked by a waterfall and
    reflects the process of headward erosion as well as vertical erosion due
    to the renewed ability to erode vertically.
    River terraces - are the remains of the former flood plain - now
    abandoned as the river has eroded too deeply to access it; these may be
    paired - i.e. at the same level on either side of the channel. This is
    indicative of rapid down cutting. If it is slower as a result of more gradual
    uplift, the terraces will be present on different sides of the channel at
    different levels - unpaired terraces as the river has time to erode laterally.
    Incised meanders - there are two types - entrenched when the cross
    section is symmetrical and ingrown where the cross profile is
    asymmetrical. Both result from an increase in the rates of vertical
    erosion - this is more rapid with entrenched meanders or can be the
    result of the presence of more resistant rock. With ingrown meanders,
    vertical erosion is less rapid, allowing some lateral erosion also.
    Reference to specific examples is not a requirement, but would be one
    way of enhancing the answer.

    From AQA June 2009 past paper mark scheme.

    HTH.
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    (Original post by jackyblueyes)
    hi, i need help with exactly understanding the meaning of rejuvination. my geography teacher has tried to explain it but i just can not see what he means. i understand the outline of it but wouldent feel comfortable to write about it in an exam. any help would be appreciated..
    haha same here, just try google or find a study website, there should be a definition there

    i think its something to do with the uplift of land due to tectonic plates

    or just try google or find a study website, there should be a definition there
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    [QUOTE=tehforum;30760683]A definition of rejuvenation is likely to form part of the answer - a 15 marks
    1 (d)
    renewal of the river’s energy as a result of a relative fall in base level.
    This will lead to a return to vertical erosion. It may be a result of a fall in
    sea level-eustatic change or an increase in the relative height of the land
    in relation to the sea - due to isostatic uplift (the ‘rebound’ following the
    end of glaciation) or due to tectonic activity.
    Landforms - knick point relates to the extent to which the river has
    created a newly graded profile to adjust to the new base level. It is
    identified by a break in slope and is usually marked by a waterfall and
    reflects the process of headward erosion as well as vertical erosion due
    to the renewed ability to erode vertically.
    River terraces - are the remains of the former flood plain - now
    abandoned as the river has eroded too deeply to access it; these may be
    paired - i.e. at the same level on either side of the channel. This is
    indicative of rapid down cutting. If it is slower as a result of more gradual
    uplift, the terraces will be present on different sides of the channel at
    different levels - unpaired terraces as the river has time to erode laterally.
    Incised meanders - there are two types - entrenched when the cross
    section is symmetrical and ingrown where the cross profile is
    asymmetrical. Both result from an increase in the rates of vertical
    erosion - this is more rapid with entrenched meanders or can be the
    result of the presence of more resistant rock. With ingrown meanders,
    vertical erosion is less rapid, allowing some lateral erosion also.
    Reference to specific examples is not a requirement, but would be one
    way of enhancing the answer.

    From AQA June 2009 past paper mark scheme.

    HTH.

    thankyou, very detailed and very much appreciated
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    (Original post by WhoFeelsLove?)
    haha same here, just try google or find a study website, there should be a definition there

    i think its something to do with the uplift of land due to tectonic plates

    or just try google or find a study website, there should be a definition there
    hi, so is there a particular website that helped you or do you still not understand the meaning of rejuviantion still?
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    (Original post by jackyblueyes)
    hi, so is there a particular website that helped you or do you still not understand the meaning of rejuviantion still?
    right now i do not understand properly, i did it in geography in like september so i have forgotten.

    im going to revise this easter so i'll go over it.

    good luck in your exams
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    thanks whofeelsthelove and good luck to you too
 
 
 

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