Lakhmir Singh and Manjit Kaur Science solution: “Volcanoes Earthquakes And Storms” Chapter 09. Here you get easy solutions of Lakhmir Singh and Manjit Kaur Science solution Chapter 09 . Here we give Chapter 09 all solution of Class 5. Its help you to complete your homework.
Board – CBSE
Text Book – SCIENCE
Class – 5
Chapter – 09
Objective Type Questions
(1) Fill in the blanks.
(a) The earth surface is made up of _______
(b) During _____ the tidal waves travel at a very high speed.
(c) The place where an earthquake begins is called ______
(d) ______ create havoc for mankind and causes damage to property.
(e) Lava cools down to form _____ rocks.
Ans. (a) Tectonic (b) Tsunami (c) Epicentre (d) Natural disasters (e) Igneous.
(2) Give one word for the following.
(a) Natural disasters (b) Seismograph (c) Tsunami (d) Lava (e) Active volcanoes
(3) True / False
(a) False (Dormant volcanoes have no erupted in recent years but may erupt in the future).
(c) False (Use stairs and do not take the lift).
(e) False (The emperor Seamount chain is an extinct volcanoes).
Subjective Type Questions
(4) Answer The following:
(a) How does a volcano erupt? How is lava different from Magma?
Ans. Volcanoes erupt when molten rock called magma rises to the surface.
A volcano is a crack in the earth’s surface through which very hot liquid rock called lava comes out along with ash and gases. It is usually in the form of a conical mountain. There is a vertical tunnel in the mountain through which the lava comes out. When the lava is underground, it is called magma.
(b) What is an epicenter? How does an earthquake occur?
Ans. The place where the earthquake begins is called the epicenter.
An earthquake is the sudden shaking of the earth surface which is made of plates which may be big or small. These plates are called tectonic plates. There is smooth movement between the plates but at times but at times the movement is sudden and severe because of shock waves giving rise to earthquakes.
(c) How do you measure an earthquake? Also mention the damage which is caused by an earthquake.
Ans. Earthquake is measure using a scale known as Richter scale.
The roads and the Bridges get damaged. Many peoples lose their lives as they get trapped under the collapsed buildings.
(d) What are tidal waves? How does a tsunami occur?
Ans. The rise and fall of sea waves is called a tidal wave.
Earthquake or volcanic eruption can take place under the sea also and is called tsunami.
(e) Name a few areas affected by the tsunami in 2004.
Ans. The areas are Sri Lanka, India, Thailand, Maldives and Somalia.
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