YEAR 7 Science Higher - Sets 1 and 2 Healthy Bodies, Electricity & Energy Home Learning Project Name Class

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1 YEAR 7 Science Higher - Sets 1 and 2 Healthy Bodies, Electricity & Energy Home Learning Project Name Class Date due in Next steps due Effort Grade NEXT STEPS STUDENT REPLY: How did you find each task? Were there any areas you found harder/easier? The de ferrers Academy - Science

2 Healthy Bodies Analyse your food intake TASK 1: Record your food intake over 2 days. Breakfast: Day 1 Meal/Snack Calories Could I have been healthier Yes / No Snack: Lunch: Snacks: Dinner: Snacks:

3 Day 2 Meal/Snack Calories Could I have been healthier Yes / No Breakfast: Snack: Lunch: Snacks: Dinner: Snacks:

4 TASK 2: Research and estimate the number of calories for each meal in your food diary. Plot the totals as a bar chart.

Healthy Bodies Identifiy fruit and vegetables TASK 3:

Used to treat cuts, rashes, stings and burns in many

spiky triangular scales Artichoke Comes in a variety of

prepared as a dessert Guava Edible root, usually red A

skin and a bitter taste Also known as an egg plant Fuzzy

known as the Chinese Gooseberry that was renamed after

5 Healthy Bodies Identifiy fruit and vegetables TASK 3: Complete the table Picture Fruit or eg Description Origin Other Info What s My Name? Amber orange in colour, contains numerous dark seeds Used to treat cuts, rashes, stings and burns in many countries Paw paw Arching, deeply lobed green leaves Has spiky triangular scales Artichoke Comes in a variety of colours including yellow, maroon and green Often prepared as a dessert Guava Edible root, usually red A member of the turnip family Elongated with dark purple skin and a bitter taste Also known as an egg plant Fuzzy brown skin with soft green inside An edible berry also known as the Chinese Gooseberry that was renamed after the New Zealand national bird Leafy green plant made of a short stem and massive leaves Also known as bowkail

6 Healthy Bodies Describe the benefits of a healthy diet TASK 4: What are the benefits of eating a healthy diet? A Balanced Diet Can Include: Benefits Low salt intake Plenty of water Limited sugary foods Fruit and eg (5 a day) Milk, Cheeses and Yoghurt Limited deep fried and fatty foods Bread, Pasta, Rice, Potatoes (starchy carbohydrates) Meat, Fish and Alternatives (Proteins) Fill in the blanks Excess fat in diet can lead to obesity, including clogging off arteries which can cause heart attacks and Lack of vitamins A, C and E can lead to poor Lack of iron can lead to and anaemia Lack of fibre can lead to Lack of calcium can lead to osteoporosis (bone weakening disease) Excess can lead to late onset diabetes Excess sugar can lead to rotting

7 Healthy Bodies Understand what food additives do TASK 5: Identifiy a meal and research food additives. ADDITIES! Listed below are the ingredients found in a popular item from a fast food restaurant. Ingredients: Wheat Flour, Water, Sugar, Yeast, egetable Oil (Rapeseed), Salt, Soya Flour, Emulsifier (E472e Mono- and Diacetyltartaric Acid Esters of Mono- and Diglycerides of Fatty Acids), Wheat Fibre, Preservative (E282 Calcium Propionate), Flour Treatment Agent (E300 Ascorbic Acid). 100% Pure Beef, salt, pepper. egetarian Cheddar Cheese (55%), Water, Butter, Whey Powder, Milk Proteins, Natural Cheese Flavouring, Emulsifying Salts (E331 Trisodium Citrate, E450 Diphosphates, E452 Polyphosphates), Salt, Preservative (E200 Sorbic Acid), Colour (E160a Natural Carotenes, E160c Paprika Extract). Tomatoes (126g per 100g Ketchup), Spirit inegar, Sugar, Salt, Spice and Herb Extract (contains Celery), Spice, Garlic Powder. Water, Spirit inegar, Mustard Seed (13%), Salt, Spices, Natural Flavouring. What food is it? Using the ingredients list above, identify what each E number is used for. Using the ingredients list above, identify what each E number is used for. Number Type Purpose E472e Emulsifier To bind ingredients E282 E300 Acidity regulator E331 Acidity regulator E450 & E452 E200 E160a & E160c To enhance colour

8 Healthy Bodies Understand how vegetarians can maintain a healthy diet TASK 6: Complete the text and research sources of protein and iron for animal and plant based diets. egetarians are a group of people who for a variety of reasons may choose not to eat. A true vegetarian does not eat any living creature or product made from any part of living creatures. Reasons range from people who simply do not like the taste, to those who do not eat animal products because of ethical beliefs. Meat is a source of which is used for muscle and tissue growth and repair and iron which is used to transport in the blood stream. This means that vegetarians need to find another source for these nutrients in their diets. PROTEIN OXYGEN MEAT Animal Sources of Protein Plant Sources of Protein Animal Sources of Iron Plant Sources of Iron

BREAKFAST I have chosen these foods to include in the breakfast because:

9 The de ferrers Academy - Science TASK 7: Design a suitable healthy food menu for a vegetarian. BREAKFAST I have chosen these foods to include in the breakfast because: LUNCH I have chosen these foods to include in the lunch because: DINNER I have chosen these foods to include in the dinner because:

10 Electricity and Energy Identify types of energy TASK 8: Complete the questions Look at the pictures below. All the objects are transferring energy. They are designed to transfer the energy mainly as movement (kinetic) energy, light energy, sound energy or heat energy. a Which objects transfer the energy mainly as kinetic energy? b Which object transfers the energy mainly as both sound and light energy? c Complete the sentences below. i A Bunsen burner transfers energy mainly as... energy, but it also transfers some as light energy. ii When a handbell rings, kinetic energy is transferred to... energy. Complete these sentences about types of energy, using the words below. In a loudspeaker, energy transfers along the connecting wires as... energy and out of the loudspeaker as... energy. When a drummer hits his drum kit,... energy in his sticks is transferred to... energy coming from the drum. In between, the drum skin transfers... energy.

11 Electricity and Energy Heat energy and materials TASK 9: Complete the crossword Across EclipseCrossword.com 2. Materials which let heat travel through them 6. The only heat transfer that can travel through a vacuum 8. A type of material which are good at conducting 9. Gas and liquid 10. The temperature at which a liquid changes to a gas Down 1. Equipment used to measure temperature 2. Heat energy through vibrating particles 3. The temperature at which a solid turns to liquid 4. An area with no particles 5. How heat is transferred in fluids 7. What a hot gas or liquid will always do

12 Electricity and Energy Paying for electrical energy TASK 9: Complete the questions 1 The table below shows a record of the electrical devices used by a student over a period of 12 hours. Energy transferred (kwh) = power (kw) x time (h) a) Calculate the energy transferred by each device in kw h. Record the result of each calculation in the last column. Device Power (in kw) Time of use (in hours) Energy transferred (in kw h) Computer Heater Kettle Lamp Microwave oven Television b) Calculate the total energy transferred by all the devices. kw h c) The cost of electricity used by the student was 7.0 p per kw h. cost = energy transferred (kwh) x cost per kwh Calculate the cost of the total energy transferred.

13 2 a) Calculate the energy transferred, in kw h, when: i) A 1200 W (change to kw!) microwave oven is used for 0.3 hours. ii) A 2.0 kw electric heater is used for 2 hours. iii) A 0.6 kw hairdryer is used for 30 minutes (change to hours!). b) i) Calculate the total energy transferred in a). ii) Calculate the cost of the electricity used in a) if each kw h of energy transferred costs 8 p.

14 Electricity and Energy Types of heat transfer TASK 10: Fill in the gaps The 3 ways of transferring energy are, and radiation. Conduction This is the of heat energy through a from a hotter part to a part. This happens without any movement of the substance. A substance is a conductor of heat if the flows through it easily. An example of a good conductor is. A poor heat conductor is called an. An example of a good insulator is. Convection This is the transfer of energy through the movement of themselves. moves from areas to cooler areas. Liquids and can transfer heat by because the can move around unlike the particles in a solid. Radiation- This is the transfer of heat energy by. Radiated heat can travel through a, an empty space with no particles in it. This is why an ice cream will melt in the sun.

15 Electricity and Energy Electric circuits and symbols for components TASK 11: Complete the questions Diagram 1 Diagram 2 B A C 1. What components do the letters A, B and C represent? A... B... C What is the name given to the way the bulbs are arranged in Diagram 1? 3. What is the name given to the way the bulbs are arranged in Diagram 2?

16 4. In a series circuit, like in Diagram 1, how is the brightness of the first bulb affected when the second bulb is connected? Explain why this happens? 5. In a parallel circuit, like in Diagram 2, how is the brightness of the first bulb affected when the second bulb is connected? Explain why this happens? 6. Give one example of where we might find a series circuit in everyday life. 7. Give one example of where we might find a parallel circuit in everyday life. 8. Explain one advantage of using a parallel circuit rather than a series circuit. 9. Dan and Tom build a circuit like the one shown below. X (a) Name the component labelled X... (b) What are Dan and Tom using the component labelled X to measure?...

17 (c) Dan says, Ammeter 1 will show a lower reading than Ammeter 2 because the bulbs in the circuit use up the current. Tom says, Ammeter 1 will show the same reading as Ammeter 2 because current is not used up. Who is right?... (d) If Ammeter 1 has a reading of 1.5A, what reading will Ammeter 2 show?...a 10. (a) The circuit above contains 2 cells. Describe what would happen to the bulbs if Dan and Tom added another cell. (b) Describe how the reading on the reading on the ammeters would change if another cell was added to the circuit.

Which lamps will be lit if: a only switch X is closed (on)?

18 Electricity and Energy Current and oltage in circuits TASK 12: Complete the questions Look at this circuit diagram. Which lamps will be lit if: a only switch X is closed (on)? b only switch Y is closed (on)? X B c both switches X and Y are closed (on)? A Y C a b D c

19 Write the voltage shown by the voltmeter at each question mark Each cell has a voltage of 1.5 and all the lamps are exactly the same. A B?? C D M?? 0.5 These cells are all different. A 9? B M 8? 1 2 C 12 1 M? 4

1 What Are the Different Food Groups?

1 What Are the Different Food Groups? 1. Match the food items below to where they are found in the supermarket. The first one has been done for you. Food item Section Oil Meat Fruits and vegetables Grains