science education teaching

Year 8 Topic Test Human Systems Question paper Spelling words 1. 2. 3. 4. 5. Section A - Multiple Choice 1). Digestion begins in the a. mouth b. stomach c. large intestine d. duodenum 2). What carries oxygen from your lungs to the cells that need it? a. skin b. blood c. alveoli d. bronchioles 3). The part of the blood which carries oxygen is the a. red blood cells b. white blood cells c. plasma d. platelets 4). Blood going to the lungs is blue because a. needs carbon dioxide b. needs oxygen c. needs to deposit carbon dioxide d. needs to deposit oxygen 5). Bones are held tightly together by a. muscles b. joints c. ligaments d. calcium 6). The name of the structure which helps force air in and out of the lungs a. diaphragm b. alveoli c. aorta d. urethra 7). What moves food through to your stomach? a. the small intestine b. the esophagus c. the large intestine d. the kidneys 8). The three main nutrients are; a. dairy, meat and oil b. carbohydrates, proteins, fats and oils c. meat, proteins and chips d. bread, pasta and protein 9). The soft tissue inside a bone is a. bone marrow b. cartilage c. calcium d. compact bone 10). Your friend has rung you and said that she has a broken femur. When you see her , she will have a. her neck in a collar b. her arm in a sling c. crutches to help her walk d. her hand bandaged. 11). Most of the chemical changes in digestion are completed by the time the food reaches the large intestine. Water, vitamins and salts are absorbed into the blood from the large intestine. Food remains in the large intestine for approximately what percentage of time? a. 75% b. 60% c. 55% d. 20% 12). What is the main role of the large intestine? a. to churn food around with enzymes b. to break down solid food c. to absorb water d. none of the above 13). What are arteries a. blood vessels that move blood away from the heart b. blood vessels that move blood toward the heart c. capillaries that connect veins d. none of the above 14). Which organs does the ribcage protect? a. diaphragm and lungs b. heart and lungs c. intestines and lungs d. stomach and lungs 15). Asthma is caused by the narrowing of the air pipes as a. The muscle wall of the air pipes contracts b. The lining of the air pipes swells c. Too much mucus is produced d. All of the above B – Cloze passage oxygen skeleton respiration balanced Word List asthma minerals arteries calcium lungs excretion 1. The human _____________ gives the body shape, protects organs and enables movement. 2. Healthy bones require an adequate supply of ________________ and phosphorus. 3. Vitamins and _______________ are essential for good energy and the growth and repair of cells. 4. A process which gets rid of unwanted products or wastes from the body is called ________________. 5. The exchange of oxygen and carbon dioxide takes place in the __________________. 6. __________________ is a chemical reaction that allows energy from food to be released. 7. A ________________ diet is needed for good health. 8. _________________ have thick, elastic, muscular walls that carry blood away from your heart. 9. _________________ is a narrowing of the air pipes that affects many Australians. 10. Respiration in animals uses ________________ and releases carbon dioxide. Section C – Short answer 1. Label the bones indicated on the skeleton (on your answer sheet). 2. The excretion of toxins is performed in several ways using the following organs: skin. kidneys, lungs. (a). Which of these organs is the largest? (b). Each of these organs has an individual role. Complete the table below by matching the correct organ to its function. Organ Function 1. Responsible for the removal of carbon dioxide. 2. Responsible for the cooling of the body. Also excretes small amounts of urea and lactic acid. 3. Filters blood and removes excess water as well as dissolved salts, glucose, urea, uric acid and amino acids. 3. Label the diagram below using the following words; left atrium, right atrium, to the lungs, around the body, left ventricle, right ventricle. 4. The digestive system is an important human system. Using the words provided label the diagram below. - esophagus - large intestine - stomach - mouth - small intestine - liver 5. The vital capacity of the lungs is about 5 litres. Use the table below to draw a graph and estimate the diameter of the lung of a giant who has a lung vital capacity of 8 litres. Lung Diameter in centimeters 13 14 15 16 17 18 19 20 21 X Vital Capacity in litres 1.2 1.4 1.8 2.1 2.6 3.0 3.6 4.2 4.8 8 6. Children are often inattentive and unable to concentrate after lunch. One theory suggests that their inattentiveness may be caused by chocolate and sweets eaten as part of the midday meal. Suggest a method that might be used to test the hypothesis. List any controls that you would need for your experiment. Remember to include possible results in your experimental report. Year 8: Human Systems Answer sheet Class: _________________ Spelling words 1. __________________ 2. __________________ 3. __________________ 4. __________________ 5. __________________ Name: _________________________ Section A – Multiple choice 1. 2. 3. 4. 5. 6. 7. 8. 9. a a a a a a a a a b b b b b b b b b b c c c c c c c c c c d d d d d d d d d d 11. 12 13. 14. 15. a a a a a b b b b b c c c c c d d d d d 10. a Section B – Cloze passage 1. ______________________ 2. ______________________ 3. ______________________ 4. ______________________ 5. ______________________ 6. _________________________ 7. _________________________ 8. _________________________ 9. _________________________ 10. _________________________ Section C – Short answer 1. (a). ______________________ (b). ______________________ (c). ______________________ (d). ______________________ (e). ______________________ (f). ______________________ (g). ______________________ 2. (a). ______________________ (b) Organ ________________ _ ________________ _ ________________ _ Function 1. Responsible for the removal of carbon dioxide. 2. Responsible for the cooling of the body. Also excretes small amounts of urea and lactic acid. 3. Filters blood and removes excess water as well as dissolved salts, glucose, urea, uric acid and amino acids. 3. (a). ______________________ (b). ______________________ (c). ______________________ (d). _____________________ (e). _____________________ (f). _____________________ 4. 1. _____________________ 2. _____________________ 3. _____________________ 4. _____________________ 5. _____________________ 6. _____________________ 5. Graph paper leave edges blank 6. _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ ______________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _______ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ __________________________________