- Science
- 7 Grade ANN Mwandiki
END OF TERM 1 PROGRESSIVE TEST DECEMBER 2021 YEAR 7 SCIENCE INSTRUCTIONS: - ANSWER ALL QUESTIONS IN THE SPACES PROVIDED. 1. The colour of pH paper can change in different solutions. (a) Maryam tests different fruit juices with pH paper. (i) Which juice is neutral? (1mk) ………………………………………….
(ii) Which juice is the most acidic? (1mk) …………………………………………………… (b) Maryanne dips pH paper into a solution of pH10. Suggest the colour of the pH paper. ……………………………………………………………… (1mk) (c) Maryam mixes an alkaline solution with orange juice. What is the name of this reaction between an alkali and an acid? (1mk) …………………………………………………………………………. 2. (a) Farid has three different fuels. Draw lines between each fuel and the correct state of matter. (3mks) (b) (i) Solids, liquids and gases can change from one state of matter to another. Use the words in the list to write the names of the processes shown in the diagram.
(ii) Draw an arrow on the diagram to show what happens during the process of melting. (3mks) 3. Plant cells contain many parts. (a) One part of this cell has not been named. Add this name to the diagram. (1mk) (b) Chloroplasts are not found in all plant cells. (i) Name a plant cell that has chloroplasts. (1mk) ………………………………………….. (ii) Name a plant cell that does not have chloroplasts. (1mk) ……………………………………………… (c) Two parts labelled on the diagram are not found in any animal cells. Which two parts? (2mks) ………………………………..
………………………………… 4. The human body is made up of organ systems. (a) Draw a line to connect each organ system to its main function. (5mks) (b) Here is a diagram showing the muscles and bones in the arm. (i) Label the two muscles (1) (ii) How do the two muscles work together to make the arm bend? (2mks) 5. Different materials have different properties and uses. Draw lines to connect each material to its property and each property to its use. One has been done for you.
(6mks) 6. Which of the statements about particles in a solid are correct? (3mks) Tick (√) the three correct statements. The particles in a solid are: further apart than the particles in a liquid. further apart than the particles in a gas. able to vibrate about a fixed point. arranged in a more fixed pattern than particles in a liquid. not able to vibrate when they reach 0°C. able to vibrate more as they gain energy. 7. The diagrams show the arrangement of particles in solids, liquids and gases. (a) Draw lines to match each word with the correct diagram. (3mks)
(b) The table shows some properties of a solid, liquid and gas. Tick (√) the box to show if the property is of a solid, liquid or gas. (6mks) 8. (a) Name one organ in the human body that is made from muscle. (1mk) (b) Look at the diagram. (1mk) What is the name of the organ X? (c)All living things have seven life processes. (3mks) Fill in the missing two life processes. Nutrition ……………… Movement ………………. Sensitivity
………………… Respiration (d) Draw a well labelled diagram of an animal cell. (5mks) 9. (a) Name any five metals (5mks) (b) Name any five non-metals (5mks) 10. Write the functions of the following parts of a cell. (a) nucleus (b) cytoplasm (c) cell membrane 11. What is force? [1mk] 12. a) Define friction. [1mk] b) State 2 bad effects of frictional force. [2mks] c) What are the two ways of reducing friction force? [2mks] d) State two importance of friction force to our daily lives [2mks] 13. a) Amani noticed that whenever he jumps up to plug a mango from a mango tree, he fall back. Which force is affecting Amani? [1mk] b) State the difference between mass and weight. [2mks]
c) Amani says that the mass of an object does not change from one planet to another, but the weight does. Why? [1mk] d) The mass of an astronaut of Earth is 68kg. What is her weight if the force of gravity on Earth is estimated to be 10N/kg? (Remember: weight = mass x gravity) [2mks] 14. a) What is air resistance? [1mk] b) Between a slow moving car and a fast moving lorry, state which one experiences more air resistance? [1mks] c) Give one way of reducing air resistance in moving objects? [1mk] d) Kiplagat says that he dislikes running a marathon during a windy day. What do you think is the reason he dislikes this? [2mks] 15. A heavy object and a light object, fall at the same rate in a vacuum while a heavy one falls faster than a light object in air. Why? [2mks] 16. a) What is energy? [1mk] b) Natasha says that the sun is the main source of energy. Explain why she says so? [2mks] c) Name three forms of fuels. [3mks] d) Name any 3 forms of energy you know. [3mks] e) Give any two uses of electric energy. [2mks]