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Copyright of www.makemegenius.com, for more videos ,visit us. 9B Fit and healthy Fit and healthy How fit are you? Food for fitness Caring for your health Copyright of www.makemegenius.com, for more videos ,visit us. 9B Fit and healthy How fit are you? Copyright of www.makemegenius.com, for more videos ,visit us. 9B How fit are you? What does it mean to be fit? If you are fit, your body is well set up for exercise. For exercise your muscle cells need energy. Where does this come from? carbon dioxide oxygen respiration water glucose energy Which organ systems provide the things you need for respiration? Copyright of www.makemegenius.com, for more videos ,visit us. 9B In… out… in… out... Stand up and feel your ribs! Can you feel these movements when you breathe in and out? Copyright of www.makemegenius.com, for more videos ,visit us. 9B Breathing and respiration Explain these observations about breathing and respiration. You need to breathe faster and deeper when you run. Athletes tend to have big lungs. Smokers often cannot run as fast as nonsmokers. If you are fit, your breathing rate returns to normal quickly after exercise. Copyright of www.makemegenius.com, for more videos ,visit us. 9B Know your pelvis from your elbow A joint is a place where two or more bones meet. Joints allow us to move. shoulder shouldera Name these joints. elbowb Which are ball-andsocket joints? Which are hinge joints? hip hipc wristd fingere kneef ankle g Copyright of www.makemegenius.com, for more videos ,visit us. 9B Antagonistic muscles What are your muscles doing when you bend your arm? Are they contracting or relaxing? muscle group bending the arm straightening the arm biceps contracting relaxing triceps relaxing contracting The biceps and triceps are an antagonistic pair of muscles. What does this mean? Muscles can only pull, not push. So one muscle pulls the bone one way, and the paired muscle pulls it back again. Which muscle contracts when you straighten your leg? Copyright of www.makemegenius.com, for more videos ,visit us. 9B Hot and sweaty Contracting is hard work for muscles. They get hot. Respiration releases energy so that they can work. Look at these thermal images. The hot areas of the body are red. Which exercise belongs with which image? sit-ups swimming press-ups cycling arm wrestling sit-ups arm wrestling press-ups swimming Copyright of www.makemegenius.com, for more videos ,visit us. cycling 9B Fit and healthy Food for fitness Copyright of www.makemegenius.com, for more videos ,visit us. 9B Healthy diet Apples are a healthy food. Would apples be healthy if they were all you ever ate? Are there foods so unhealthy you should not eat them at all? Why might someone avoid a particular food? A healthy diet contains a good mixture of different nutrients. What are the seven types of nutrient? Explain why a breast-feeding mother needs a different diet from a housebound elderly man. Copyright of www.makemegenius.com, for more videos ,visit us. 9B Vitamins and minerals We need vitamins and minerals for our bodies to be healthy. Match each one below to the effect caused if it is missing from the diet. vitamin or mineral effect if missing vitamin A unhealthy skin night blindness vitamin B weak bones and teeth unhealthy skin vitamin C night blindness scurvy iron anaemia calcium scurvybones and teeth weak What foods provide these vitamins and minerals? Copyright of www.makemegenius.com, for more videos ,visit us. 9B Cooked to death? What happens to vitamin C when you cook vegetables? vegetable vitamin C score raw cooked at 60 °C for 1 min cooked at 60 °C for 5 min cooked at 60 °C for 10 min cooked at 100 °C for 1 min cooked at 100 °C for 5 min cooked at 100 °C for 10 min Which has more effect – cooking time or temperature? Copyright of www.makemegenius.com, for more videos ,visit us. 9B Fit and healthy Caring for your health Copyright of www.makemegenius.com, for more videos ,visit us. 9B Health quiz 1. Proteins are needed by the body for… a) growth and repair of tissues b) a quick energy boost when you are tired c) stopping you falling asleep in science lessons. 2. Overcooking vegetables can be bad for your health because... a) cooking allows poisons to build up in vegetables and makes them all taste like Brussel sprouts b) the heat destroys some of the vitamins c) you will burn your mouth when you eat them. Copyright of www.makemegenius.com, for more videos ,visit us. 9B Health quiz 3. Exercise that raises your heart rate is good for you because… a) it makes it easier to find your pulse b) it strengthens the heart muscle c) it cleans out the arteries as the blood is forced through more quickly. 4. A doctor advised a very overweight patient not to go jogging. Which would not be a good reason for her advice? a) it could put a strain on your knees b) you don’t have a good sense of direction – could get lost c) it could put a strain on your heart. Copyright of www.makemegenius.com, for more videos ,visit us. 9B Health quiz 5. Is cannabis legal? a) yes, provided you only have a small amount for your own personal use b) yes, provided you only smoke it in certain areas c) no, cannabis is still illegal in the UK. 6. How much ecstasy can you take before you risk brain damage and even death? a) one tablet b) one tablet every week c) one tablet every month. Copyright of www.makemegenius.com, for more videos ,visit us. Thanks Submitted by Harshit Pandey St. johns Public School Copyright of www.makemegenius.com, for more videos ,visit us. If you also want to share your own or your kid’s presentation(ppt) please send it on [email protected] Copyright of www.makemegenius.com, for more videos ,visit us. Copyright of www.makemegenius.com, for more videos ,visit us.