ESS
Grade-7
Easy

Question

Which is the longest subdivision of the geological time scale?

  1. Era
  2. Eon
  3. Epoch
  4. Period

The correct answer is: Eon


    The geological time scale provides the calendar for the events of Earth’s history. It divides Earth’s history into geological time periods. Based on fossil records, scientists have classified geological time scales into four subdivisions, namely – Eons, eras, periods, and epochs.

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    Landslides occur when land, rock, and debris plummet down the side of a mountain or cliff, sometimes at breakneck speeds.

    Landslides occur when land, rock, and debris plummet down the side of a mountain or cliff, sometimes at breakneck speeds.

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    Read the following statements:
    Statement 1: Volcanic eruptions in specific regions can also cause landslides.
    Statement 2: Landslides often occur in mountain regions.

    Read the following statements:
    Statement 1: Volcanic eruptions in specific regions can also cause landslides.
    Statement 2: Landslides often occur in mountain regions.

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    When a boulder tumbles down a hillside, it's a good example of what type of landslide?

    When a boulder tumbles down a hillside, it's a good example of what type of landslide?

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    Which of the following statement is incorrect?
    i. Landslides can be caused because of heavy rains
    ii. Landslides cannot be caused by earthquakes.
    iii. Deforestation can cause landslides.

    Which of the following statement is incorrect?
    i. Landslides can be caused because of heavy rains
    ii. Landslides cannot be caused by earthquakes.
    iii. Deforestation can cause landslides.

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    Identify the type of flow shown in the below image:

    Identify the type of flow shown in the below image:

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    In which of the following does the earth’s mass rotates forward about a pivot?

    In which of the following does the earth’s mass rotates forward about a pivot?

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    Which of the following device is used to detect landslides?

    Which of the following device is used to detect landslides?

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    Identify the type of landslide for the following image:

    Identify the type of landslide for the following image:

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    Identify the type of landslide from the following statement.
    These can occur because of some fractures between the rocks and the tilt of the rocks because of gravity without collapsing.

    Identify the type of landslide from the following statement.
    These can occur because of some fractures between the rocks and the tilt of the rocks because of gravity without collapsing.

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    Consider the following terms:
    i. Lightning
    ii. Landslide
    iii. Thundering
    iv. Floods
    Earthquakes can cause:

    Consider the following terms:
    i. Lightning
    ii. Landslide
    iii. Thundering
    iv. Floods
    Earthquakes can cause:

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    Identify the man-made cause of landslides?

    Identify the man-made cause of landslides?

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    Read the following statements:
    Statement 1: Activities such as mining and deforestation can cause landslides.
    Statement 2: Landslides are caused only by anthropogenic actions.

    Read the following statements:
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    Statement 2: Landslides are caused only by anthropogenic actions.

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    Read the following statements:
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    Statement 2: Landslides bring huge costs to communities and cities, as they have to spend so much to clean up and rebuild destroyed infrastructure.

    Read the following statements:
    Statement 1: Landslide changes cannot be permanent.
    Statement 2: Landslides bring huge costs to communities and cities, as they have to spend so much to clean up and rebuild destroyed infrastructure.

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    This is not a cause of landslides.

    This is not a cause of landslides.

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