History through the Ages Aicle exercises

Click on here to do the exercises of the history through the Ages.

Video about Climate Changes

Climate Change Basics Activity 1: Vocabulary: -Global warming -Destruction -Deforestation -Contamination -Exploitation -Construction -Prevention -Reduce -Reuse -Recycle Fill in the blank. 1. The three main form of alteration of the environment are _________________, _________________, and ___________________. 2. The disappearance of forests due to cutting down trees and fires is called ____________________. 3. The ___________________ of highways, urban zones, airports, touristic resorts and other areas have a negative impact on the environment. 4. When we use a resource or extract materials as if they were limitless, we are _______________ these resources. 5. ___________________ can affect the air, the water, or the ground and is the alteration of the environment with damaging substances. 6. The increase in the Earth’s temperatures and the melting of ice caps are a result of __________________ __________________. 7. In order to create a sustainable environment we need to follow the code of the three R’s: __________________, __________________, and ________________. 8. The best way to avoid environmental risks and consequences before they happen is through _____________________.

Green house efect test

Do this test about the green house effect. Click on here to do the test. Then check if you have mistakes.

Green house effect- El efecto invernadero

Green House Effect Let's Read now Our Earth is wrapped in a blanket of air called atmosphere, it is made up of many layers of gases. The Earth gets all its heat from the Sun, it is main source of energy for our planet. Sun- rays travel through the atmosphere and reach the Earth. The rays of the sun warm the Earth, few of these rays reflect back to the atmosphere. But he gases in the atmosphere, stop some of this reflected heat from escaping into space. Because of this our earth remains warm enough to live.These gases , which stop all the heat to escape to space, are called greenhouse gases . These include carbon-dioxide,methane ,nitrous-oxide etc. This process among the sun, the atmosphere and the Earth is called the 'Greenhouse Effect', because it works the same manner as a greenhouse. The windows in a greenhouse play the similar role as the gases in the atmosphere, by keeping part of the heat inside the greenhouse. Now due to certain activities on Earth, amount of green-house gases is increasing. This is leading to more trapping of heat. If all heat reflected from earth would be trapped by green-house gases & nothing would escape, this would lead to increase in Global temperature. This is known as Global Warming. Few of the activities like increased no of factories, increased no of automobiles, burning of fossil fuels like diesel, petrol etc. is increasing amount of greenhouse gases in the atmosphere. This is also known as pollution. There are several kind of pollution like soil pollution,air pollution, water pollution etc. On the hand, due to expanding cities, human-society is cutting down huge no of trees. Trees absorb carbon-dioxide thus reducing it from atmosphere. So on one hand we are increasing sources of greenhouse gases but on the other hand we are reducing the absorbers of these gases. So people throughout the world are feeling the impact due to increased greenhouse gases. Temperature is going up & climate is changing very fast. It is advisable to watch our Global Warming video for kids first by clicking here Global Warming & Green House Effect Video

Climates and different landscapes around the world, Unit 9

Climates and Landscapes around the world Click on here to do the activities about this unit.