We have already seen ecosystems and the different layers of the Earth, now we are going to deal with Natural disasters
What are Natural Disasters?
Natural disasters are, as the name suggests, caused by the forces of nature and they are disastrous. Oftentimes, natural disasters leave death and destruction in their wake. People who are caught in them are left with injuries, destroyed homes, and missing loved ones.
There are many types of natural disasters, including avalanche, drought, earthquake, flooding, hurricane, tornado,
tsunami, volcanic eruption, and wildfire.
tsunami, volcanic eruption, and wildfire.
We’re going to look at some of the commonly occurring natural disasters in greater detail!
Earthquake:
To better understand what an Earthquake is I recommend you to watch this video:
Simply, earthquakes are shaking or rolling of the earth's surface. It is usually what happens when two blocks of the earth suddenly slip past one another, or break apart from each other as a result of tension caused by prolonged energy build up.
Earthquakes are also called temblors.
It is important to understand
the earth’s makeup to help understand earthquakes better.
In this diagram, you will notice that the inner and outer core of the earth (middle part) is liquid in nature, containing iron and nickel of extreme temperatures (5,500°C).
The Mantle is semi-molten rock, also called magma. The outer is the crust, which is the hard part of the earth that forms the surface. This outer crust includes the land on which we live, the oceans and ocean deeps and anything within 40km (approx) down the earth's surface.
It is important to understandthe earth’s makeup to help understand earthquakes better.
In this diagram, you will notice that the inner and outer core of the earth (middle part) is liquid in nature, containing iron and nickel of extreme temperatures (5,500°C).
The Mantle is semi-molten rock, also called magma. The outer is the crust, which is the hard part of the earth that forms the surface. This outer crust includes the land on which we live, the oceans and ocean deeps and anything within 40km (approx) down the earth's surface.
Earthquakes are developed in the outer crust of the earth.
Time to do it!!
This earthquake experiment is simple and requires very few items to create. This can easily be done at home.
Materials needed:
- metal cookie sheet
- wooden blocks.
Directions:
- First, have the students construct a tower on the cookie sheet using the wooden blocks.
- Shake The metal sheet as if there were an earthquake. Not surprisingly, the tower crumbles with very little shaking and the blocks fell.
The metal cookie tray is meant to represent a tectonic plate and the shaking represents the shifting that happens with an earthquake.
- metal cookie sheet
- Soil
- Optional: you can place some toy trees, toy houses or toy cars on the soil
Directions:
Once you have the materials placed as in the photo, shake the metal sheet and cardboards as in an earthquake .
Answer the questions:
1.- Why do you think everything on the metal sheet or cardboard falls down?
2.- Why do you think the crust of the Earth moves all the time long?
3. Imagine we are at the school and there is an earthquake.
What do we have to do? Where do we have to go? Investigate
Send me the pictures and videos (remember: not compulsory but desirable) of your evacuation plan (question number 3) to:
santamartabilingual@gmail.com
Deadline: June 5th
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