1 00:00:02,350 --> 00:00:07,910 The uses of rocks and minerals. What rocks and minerals are you using in class today? 2 00:00:08,890 --> 00:00:15,150 Read and think. One. Read and find three different ways we use minerals and three different ways we 3 00:00:15,150 --> 00:00:22,969 use rocks. Minerals are essential for life. All living things need minerals to grow. Minerals and 4 00:00:22,969 --> 00:00:28,809 rocks are also used to make many of the things that we use in our daily lives. Our daily lives 5 00:00:28,809 --> 00:00:36,390 referred to things that we use every day. Animals and plants need minerals to live. Plants absorb 6 00:00:36,390 --> 00:00:42,590 minerals from the soil through their roots. Animals and humans get minerals by eating plants or other 7 00:00:42,590 --> 00:00:50,289 animals. Farmers add minerals to the soil so that plants grow better. Yogurt is rich in calcium and 8 00:00:50,289 --> 00:00:58,329 avocados are rich in magnesium. These minerals are important for healthy bones. Broccoli contains 9 00:00:58,329 --> 00:01:04,370 potassium and chicken contains sodium. These minerals help maintain the right amount of water 10 00:01:04,370 --> 00:01:10,730 in our bodies. Many toothpaste contain fluoride. This mineral protects our teeth from bacteria 11 00:01:10,730 --> 00:01:19,329 and helps prevent tooth decay. Paint is made using talc. Jewelry is made of gold and silver. 12 00:01:20,730 --> 00:01:27,829 Pencils are made of graphite. Electric wires are made of copper. Batteries contain lithium. 13 00:01:28,329 --> 00:01:33,849 and cement is made of gypsum, all things that we can find on the Mohs hardness scale. 14 00:01:35,609 --> 00:01:41,290 We use different types of rock as building materials. Salamanca is called the golden city 15 00:01:41,290 --> 00:01:47,450 because it has many buildings made of sandstone which when light is reflected on it looks very 16 00:01:47,450 --> 00:01:56,650 gold. The Escorial monastery looks gray because it was built using granite. Slate is used to build 17 00:01:56,650 --> 00:02:05,849 roofs because it can easily be cut into thin flat pieces and it's waterproof waterproof means it 18 00:02:05,849 --> 00:02:14,330 won't get wet when it rains marble is used for floors because it's hard wearing attractive and 19 00:02:14,330 --> 00:02:32,400 cool and hot weather it's also a very expensive premium material and that's it thank you for 20 00:02:32,400 --> 00:02:34,240 watching