EASY
Earn 100

Decibel scale is used to measure the sound levels.

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Important Questions on Some Natural Phenomenon

MEDIUM
What are internal tectonic forces of earth? Explain any two forces.
EASY
Earthquakes can also happen under the sea.
MEDIUM
The place inside the earth's crust where the earthquake is generated is called:
MEDIUM
Write one difference between a tidal wave and a tsunami.
MEDIUM
People who study earthquakes are called _____.
EASY
Which of the following levels on a Richter scale indicates a quake that is almost not felt?
MEDIUM
An earthquake of magnitude 2 on Richter scale is:
HARD
What is the outer and inner core of the earth made up of?
MEDIUM
Define focus and epicentre with reference to an earthquake.
EASY
When the Earth was formed, its crust was cool.
EASY
The core and the mantle of the Earth both are very hot.
MEDIUM

Earthquakes that measure _____ (3/6) on the Richter Scale are so violent that they cause extensive damage.

EASY
What does a seismograph measure?
EASY
Which of the following part of the earth is made up of molten iron?
EASY
A quake of the value 1 indicates a massive earthquake.
EASY
When the Earth was formed, its crust was cool.
MEDIUM
 Mention any three effects of an earthquake.
EASY
Cotyledons are also called-
EASY
 Which instrument is used to measure earthquakes?
MEDIUM
The outermost layer of the earth containing everything that is essential for life_____.