PPT-Aseel Samaro

Calculating pressure Calculating pressure is important to engineers For example the foundations of a building have to carry the full downwards force of its weight There have been cases of buildings collapsing when the pressure on the foundations was too large. Exploring gas pressure. The pressure of the atmosphere is not the same in all places – it varies with height.. High up a mountain the atmospheric pressure is much lower than at sea level.. In space there is no atmosphere and so there is no pressure.. Understanding how seeds are dispersed by the wind . The largest seed in the world is 50 cm in . diameter.. It . comes from the palm tree called Coco de . Mer. , found only in the Seychelles islands in the Indian . Investigating chemosynthesis. Most living organisms depend on . sunlight. as their ultimate source of energy.. Green plants use sunlight to make food by . photosynthesis. .. In the darkness of the ocean depths there is no sunlight, but many organisms live there.. Exploring the movement of water and minerals in plants. Water is needed in cells to support the plant and to . photosynthesise. . Minerals in the soil dissolve in water.. How do plants get the water and minerals they need? How do they move through the plant?. Exploring the importance of minerals to plants. All plants require essential elements that are not supplied by photosynthesis – minerals that are found in soil and absorbed by the plant through its root system.. Exploring reactions of acids with carbonates . Introduction. Some rocks, such as limestone, contain a metal carbonate – limestone contains calcium carbonate. . Limestone . reacts with acids in a predictable way, and as new products are formed the limestone is eroded.. Exploring the importance of insects . Food security refers to the availability of food and the ability to obtain it. . What is the role of bees and insects in our food security?. How does agricultural practice impact on food security?. Understanding anaerobic respiration. Plants and microbes, like animals, sometimes need to respire . anaerobically.. As . in animals, this process uses glucose to release energy. .. But . the products of anaerobic respiration in plants and microbes differ from the products in animals.. Changing . Physical state. When you make ice or melt the frost from a windscreen, you are making use of changes of . state.. What . is actually happening to the particles in these processes?. Introduction. Explaining static charge. In ancient Greece, people started to put forward ideas about atoms.. They thought that atoms were the most basic particles and that they could not be split further.. It was not until the 1800s that ideas really developed beyond this.. Separating mixtures. If you put different objects together, such as different fruits in a bowl, toys in a box or sweets in a bag, you have a . mixture.. Simply . picking out one object separates it from the . The heart is odd one out. The heart is made from cardiac muscle. The bicep muscle (in the arm), the calf muscles ( in the legs) and the diaphragm (in the chest) are types of skeletal muscles.. Investigating muscle strength . Jamil. . Al-twaije. r . lina. . abdullah. References . WALKER’S PEDIATRIC GASTROINTESTINAL DISEASE PATHOPHYSIOLOGY • DIAGNOSIS •. MANAGEMENT. SIXTH EDITION. Nelson:s. textbook 20. . Transmission Basics - Aseel AlHadlaq. Data vs Signal. Data – information formatted in human/machine readable form . examples: voice, music, image, file . Signal – electric or electromagnetic representation of data .