\Revision Science Paper Question 1 a) With the aid of a diagram show a food chain: grass cow human b) What animals eat insects? Lizards squirrel frogs and bats c) What is the difference between a carnivore and herbivore? Carnivore is an animal that only eats meat Herbivore is an animal that only eat plants d) How is energy from the sun given to animals? Because the sun makes the plants grow so the herbivores eat the plants and then the energy of the sun gets into the herbivore e) List the names of animals that are omnivores. the animals that eat both meat and plants Question 2 a) Draw a series and parallel circuit with all components labelled. b) List differences between the two circuits. the series circuit has only one path The parallel circuit has one path for each lamp so if one light does not work the other light will work but the series circuit if one light does not work all the circuit does not work Question 3 Explain the process of dissolving with the aid of a diagram, label which is the solute, solution and soluble. Question 4 List three substances that are heat conductors and three insulators. Conductors Metal Iron Gold Question 5 a) List the three different types of rocks • • • Rock 1- sedimentary Rock 2- igneous Rock 3- metamorphic b) Explain the rock process: Insulators Plastic Cloth Wood c) What are sedimentary rocks and give examples of it. d) Explain the difference between erosion and melting. Question 6 What is the difference between the respiratory system and the circulatory system? …respiratory system helps you to breath The circulatory helps the heart to pump all the blood to the body Question 7 (Give examples while doing an experiment.) Question 8 Name any three types of forces and give their definition. Force 1- pulling Force 2- pushing Force 3- friction Question 9 List all the eight planets and the correct distances from the sun. Planets Mercury Venus Earth mars Jupiter Saturn Uranus Neptune Pluto Distance Question 10 Define the term orbit. Is when something is turning around something else continuously Question 11 List the eight phases of the moon in correct order. • • • • • Phase 1 full moon Phase 2 waxing gibbous Phase 3 first quarter Phase 4 waning gibbous Phase 5 new moon • • • Phase 6 waning Crecent Phase 7 third quarter Phase 8 waxing Crecent Question 12 Veins: carries blood containing wastes such as carbon dioxide from the body towards the heart Arteries: carries blood containing food and oxygen away from the heart to the body Capillaries: joins arteries and veins very narrow with thin walls to allow substances like oxygen and food to move through them Question 13 a) Explain the difference between reflection and refraction. b) With the aid of a diagram show how light is reflected and refracted. Reflection Refraction Question 14 Draw any three symbols that are related with an electric circuit board. Question 15 Explain in scientific terms how a virus is spread to people? When someone coughs and he is sick and next to people the people will take the germs from him so they will get sick, and it happens repeatedly Question 16 How do people protect themselves from Bacteria? They stay hydrated by drinking enough water, brushing their teeth and more. Question 17 Explain the difference between Mass, Weight, and gravitational force. (Write down the formula we used to calculate all the above). Question 18 Explain the difference between physical and chemical changes. List practical examples. Physical change is when you do something to anything, and it does not change for example you cut cloth the material will not change Chemical change is when you do something to anything and the material changes for example fireworks Question 19 What is a periscope? A periscope is an instrument for observation over, around or through an object, Question 20 What is a thermal conductor? Question 21 With the aid of a diagram explain the states of matter. Example: Ice cube. Use your own example. Question 22 What is the difference between a boiling substance and one evaporating?
