MHSB - 7 - Science :: Properties of Natural Resources
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[Author - Kripa S]
Objective: To learn the properties of air, water, soil
Subtopics to be covered:
- Effect of pressure of air on water
- Condensation of water
- Density of water, anomalous behaviour of water
- Types of soil, Uses of soil
Learning Outcome:
- Students know the properties of air, water and soil
- They know about anomalous behaviour of water, density of water
- They know about soil testing, soil structure and uses of soil
[Author - Kripa S]
http://cart.ebalbharati.in/BalBooks/pdfs/701020012.pdf#page=25 (Marathi)
http://cart.ebalbharati.in/BalBooks/pdfs/703020012.pdf#page=25 (English)
[Author - Kripa S]
https://image.slidesharecdn.com/managementofnaturalresources-130509061140-phpapp01/95/management-of-natural-resources-4-638.jpg?cb=1368079957 (natural resources example)
http://katiesoil.weebly.com/uploads/5/3/2/2/53228811/2864211_orig.jpg (how is soil formed)
http://www.eschooltoday.com/natural-resources/images/renewable-and-non-renewable-natural-resources.jpg (types of natural resources)
[Author - Kripa S]
1. Take a little soil. Break the clumps with your hand to powder it. Now take a glass tumbler, three quarters filled with water, and then add a handful of soil to it. Stir it well with a stick to dissolve the soil. Now let it stand undisturbed for some time. Observe the layers of soil and take notes.
2. Make a group of five students and discuss the uses of water in your daily life. Write down the uses. Classify the above uses of water in three
groups, uses in a house or family, for agricultural purposes and others.
3. Form groups of 4 to 5 students and discuss the following topics in each group. Prepare points and share. The topics to be discussed are :
a) What will happen if rainfall this year is less than last year?
b) What would happen if there was no rainfall for five years?
c) What could be the possible reasons for water scarcity in a particular place?
d) What problems can arise due to water scarcity in a particular place?
[Author - Shyama Ranade]
https://drive.google.com/open?id=0BzNF2YyqQxJ-UHJsOXBsUVZFbmM (Answer Key 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-dDR6c09MaXR1N1k (Answer Key 2)
[Contributor - Aditi Joglekar]
Term | Transliterated Term | Translated Term |
Mass | मास | वस्तुमान |
Weight | वेट | वजन |
Atmospheric pressure | ऍटमॉस्फेरिक प्रेशर | वातावरणाचा दाब |
Barometer | बॅरोमीटर | वायुदाबमापक |
Scattering of light | स्कॅटरिंग ऑफ लाईट | प्रकाशाचे विकिरण |
Temperature regulation | टेम्परेचर रेग्युलेशन | तापमान नियंत्रण |
Transmission of sound | ट्रान्समिशन ऑफ साऊंड | ध्वनिप्रसारण |
Anomalous behavious | ऍनोमॅलस बिहेवियर | असंगत वर्तन |
Texture | टॆक्सचर | पोत |
Sandy soil | सँडी सॉईल | रेताड मृदा |
Silt soil | सिल्ट सॉईल | पोयटा मृदा |
Clay soil | क्ले सॉईल | चिकण मृदा |
China clay | चायना क्ले | चिनी मृदा |
Kaolin | केओलिन | केओलिन |
Solute | सोल्युट | द्राव्य |
Solvent | सॉल्व्हन्ट | द्रावक |
Solution | सोल्यूशन | द्रावण |
[Author - Shyama Ranade]
https://drive.google.com/open?id=0BzNF2YyqQxJ-Sm9aRHpaNVBMcm8 (Worksheet 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-M1REU0szc0ZtVVU (Worksheet 2)
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