23/04/2020British Lower Secondary/Junior Checkpoint Mock Exams(Science) 0Comments by Gate Academy Welcome to your British Lower Secondary/Junior Checkpoint Mock Exams(Science) NAME EMAIL PHONE NUMBER 1. Poor diets can cause health problems.Iman and Mike look at information about the amount of fat and fibre in different fruits. All BUT ONE is the reason fibre is important in the dietkeeps the digestive system healthygood source of dietprevents constipationspeeds up the movement of waste out of the bodyhelps prevent bowel cancer2. This list shows properties that different materials can have. A. magnetic E. good conductor of heat B. can be compressed F. poor conductor of heatC. very high melting point G. good conductor of electricityD. very low melting point H. non conductor of electricity Write down the letter of the property that answers this question.Which property from the list explains why plastic makes a good material for the handle of a kettle?HBDF3. Plants and green algae need mineral salts to grow.One mineral salt is magnesium sulfate. Taraoluwa and Kafeel investigate the growth of algae.They put different concentrations of magnesium sulfate solution into five flasks, A, B, C, D and E.They then add the algae. Why did they leave the flasks for 5 days?to control a variableto see if the algae will dieto have a fair testso the algae could grow4. Chidi makes a prediction.Chidi thinks he needs more evidence related to Prediction 2.Suggest one extra piece of evidence he could use.find another source to check the evidence obtainedMercury is cooler than Venus but farther to the Suninformation about less planetsget to find more information about mercury5. Chidi makes a prediction.How does the information in the table support Prediction 2?Earth is hotter than Mars but farther to the SunEarth is cooler than Mars but farther to the SunEarth is cooler than Mars but closer to the SunEarth is hotter than Mars but closer to the Sun6. Here are some statements about the solar system.A. The Earth orbits the Sun.B. The Earth spins on its axis.C. The Moon orbits the Earth.D. The stars orbit the Sun.E. The Sun orbits the Earth.What letter of the statement answers this question.What did Copernicus and Galileo think was wrong?ECABD7. Given the table below. Decide if the information indicates that the element is a metal or a non-metal. C and D in ordernon-metal, non-metalmetal, metalmetal, non-metalnon-metal, metal8. Tireni whistles three notes into a microphone connected to an oscilloscope.An oscilloscope shows the shape and size of a sound wave.The diagram shows the waves for whistle 2 and whistle 3.Compare the pitch of whistle 2 and whistle 3.not enough informationwhistle 2 is the same as whistle 3whistle 3 is lower than whistle 2whistle 2 is lower than whistle 39. In italic is a part of a plant Choose from the list the correct function of the Leafabsorption of waterphotosynthesistransport of water and mineralsreproduction10. Plants and green algae need mineral salts to grow.One mineral salt is magnesium sulfate. Taraoluwa and Kafeel investigate the growth of algae.They put different concentrations of magnesium sulfate solution into five flasks, A, B, C, D and E.They then add the algae. Here are their results.When the colour of the algae is dark green it has grown the most.Complete the sentence.Choose a word from the list. carbon dioxide fastest the same slowest sugar waterWhen the concentration of magnesium sulfate is 4 the algae grow .........................fastestcarbon dioxideslowestthe samesugar11. Poor diets can cause health problems.Iman and Mike look at information about the amount of fat and fibre in different fruits. All BUT ONE is the reason fibre is important in the dietgood source of dietspeeds up the movement of waste out of the bodyhelps prevent bowel cancerprevents constipationkeeps the digestive system healthy12. Rocks in the Earth’s crust are classified by the way that they are formed.Complete the sentences about rock formation.Choose words from the list. igneous metamorphic sedimentary...........................rocks are formed when molten lava from a volcano cools down.none of the aboveigneousmetamorphicsedimentary13. The diagram shows a palisade cell.Name the part of the cell in which photosynthesis takes place.chloroplastchlorophyllnucleuscell membranecytoplasm14. A car is driving along a road. What type of motion is exhibited by the wheels of the car?rotationaltranslationaloscillatoryrandomvibrational15. The Earth is made up of three layers including the core and the crust. What is the name of the other layer?magmamantlecrustcore16. Zainab has five chickens.Here is some information about her chickens. Other qualities can be used when selectively breeding chickens.Pick the most usefulnumber of featherssize of eggslow life expectancyamount of milk produced17. Plants and green algae need mineral salts to grow.One mineral salt is magnesium sulfate. Taraoluwa and Kafeel investigate the growth of algae.They put different concentrations of magnesium sulfate solution into five flasks, A, B, C, D and E.They then add the algae. Why did they leave the flasks for 5 days?so the algae could growto have a fair testto control a variableto see if the algae will die18. Hassan does an experiment to find the maximum friction force between a wooden block and different surfaces.Here are his results.Name the apparatus Hassan uses to measure the friction force.spring balancechemical balancenewtonmeterall of the above19. Chidi makes a prediction about the planets in the Solar system.To find evidence to support his prediction he uses the internet.The table shows the information he findsDoes the information in the table support Prediction 1?NoYesMaybenot enough information20. Use the key to identify this coral reef fish..1. shape is very long and very thin go to 2 shape is not long and thin go to 32. fins are pointed trumpetfish fins are smooth eel3. eyes on top of head go to 4 eyes each side of head go to 54. long thin tail ray has a blunt tail flounder5. has stripes go to 6 does not have stripes sweeper6. has dark tips to fins and tail clownfish does not have dark tips to fins and tail angelfishThe coral reef fish is a ........................................................angelfishclownfishflounderray21. Hassan does an experiment to find the maximum friction force between a wooden block and different surfaces.Here are his results.Hassan repeated the measurements for each surface three times. All of these are reasons he did EXCEPTchecking reliabilityidentify anomalousget the largest valueunusual results22. The diagram shows the particle arrangement in a liquid. Sade puts five drops of a liquid perfume on the back of her hand. A few seconds later Sade can smell the perfume.This is because the perfume diffuses into her nose. Complete the sentence about diffusion.In diffusion the perfume moves from an area of ..................................concentration to an area of ................................... concentration.high, lowlow, highno, lowno, high23. Complete the explanation using these words belowarea force pressure A sharp knife cuts through bread more easily than a blunt knife.The edge of the sharp knife has a smaller ..................................... so the................................ acting on the knife produces a larger .................................. .24. The diagram shows the energy flow into and out of a coal-fired power station. How much useful electrical energy is provided by the power station?1000 MJ400MJ1400 MJ300 MJ600 MJ25. Some metal railings have started to rust. Which two substances must be present for the railings to rust?carbon dioxide, oxygenoxygen, waterhydrogen, nitrogencarbon dioxide, hydrogennitrogen, water26. This is a question about forces.Look at the diagrams below.Which diagrams show a turning force?D and EA and CE and AB and CB and D27. Manjit puts a metal saucepan of milk on a cooker as shown.Thermal (heat) energy can be transferred by conduction, convection and radiation. Which is the main process that transfers thermal energy through the metalsaucepan?radiationheatconvectionconduction28. This is a question about forces.Look at the diagrams below.Which diagram shows a turning force?DBAC29. Poor diets can cause health problems.Choose phrases from the listHeart disease Tooth decay High blood pressure Little energy Poor growthToo much fat causes which health problem?heart diseaselittle energyHigh blood pressurepoor growth30. Hassan does an experiment to find the maximum friction force between a wooden block and different surfaces.Here are his results.Which is the one anomalous reading in the table.9.318.126.432.631. The giant panda lives in China.The diagram shows a simple food web involving the panda. Use the information in the food web to explain why the panda is described as anomnivore.eats animals onlyeats plants onlynot enough information in the diagrameats animals and plants32. Rocks in the Earth’s crust are classified by the way that they are formed.Complete the sentences about rock formation.Choose words from the list. igneous metamorphic sedimentary...........................rocks are found in layers and often contain fossils.sedimentaryall of the abovemetamorphicigneous33. The diagram shows the energy flow into and out of a coal-fired power station. How much useful electrical energy is provided by the power station?600 MJ300 MJ1000 MJ1400 MJ400MJ34. Poor diets can cause health problems.Iman and Mike look at information about the amount of fat and fibre in different fruits. Name the two fruits with the highest amount of fibre.pineapple and bananapineapple and kiwi fruitstrawberry and pineapplebanana and orange35. Hydrogen peroxide is used to make oxygen in the laboratory.Hydrogen peroxide breaks down to form water and oxygen. This reaction is much faster when a chemical called manganese(IV) oxide is added to the hydrogen peroxide.The manganese(IV) oxide is unchanged at the end of the reaction.Chioma investigates the effect of temperature on the breakdown of hydrogen peroxide.Which variable do you think she should change?catalystalkaliacidtemperature36. The giant panda lives in China.The diagram shows a simple food web involving the panda. Name one primary consumer in the food web.fishwater plantssnailsbamboo plant37. Tireni whistles three notes into a microphone connected to an oscilloscope.An oscilloscope shows the shape and size of a sound wave.The diagram below shows the waves for whistle 1 and whistle 2. Use words from the list below to complete this sentence.less than the same as greater than The wavelength of whistle 1 is ............................... the wavelength of whistle 2.less thannot enough informationthe same asgreater than38. Chidi makes a prediction about the planets in the Solar system.To find evidence to support his prediction he uses the internet.The table shows the information he findsChidi correctly predicts he will weigh more on Earth than on Mars.How does the information in the table supports his prediction.mass of Earth is less than Marsstrength of gravity is higher on Earth than Marsstrength of gravity is less on Earth than Marsnot enough information39. Hydrogen peroxide is used to make oxygen in the laboratory.Hydrogen peroxide breaks down to form water and oxygen. This reaction is much faster when a chemical called manganese(IV) oxide is added to the hydrogen peroxide.The manganese(IV) oxide is unchanged at the end of the reaction.Chioma investigates the effect of temperature on the breakdown of hydrogen peroxide.She should control (keep the same) all BUT ONE variable.same apparatusvolume of hydrogen peroxideamount of catalystconcentration of hydrogen peroxideparticle size of the manganese (IV) oxide40. Zainab has five chickens.Here is some information about her chickens. Other qualities can be used when selectively breeding chickens.Pick the two qualities that are the most usefullow life expectancy, amount of milk producedsize of eggs, amount of milk producedsize of eggs, resistance to diseaseresistance to disease, number of feathers41. Look at the table.It shows the melting points and boiling points of some elements. Use the table to answer the question below.Which element is a non-metal?oxygengoldironmercurysodium42. Safia investigates the reaction between magnesium ribbon and dilute sulfuric acid.In each experiment Safia uses 25 cm³ of sulfuric acid.She records the temperature of the acid and then adds some magnesium ribbon.When the magnesium has finished reacting she records the temperature of the acid again.Safia does this experiment six times as shown below.Each time she uses a different length of magnesium ribbon. The reaction between magnesium and sulfuric acid releases energy.What is the name given to a reaction that releases energy?heatintrinsicexothermicendothermic43. Tireni whistles three notes into a microphone connected to an oscilloscope.An oscilloscope shows the shape and size of a sound wave.The diagram below shows the waves for whistle 1 and whistle 2. Use words from the list below to complete this sentence.less than the same as greater than The amplitude of whistle 1 is .................................. the amplitude ofwhistle 2.less thanthe same asnot enough informationgreater than44. Tireni whistles three notes into a microphone connected to an oscilloscope.An oscilloscope shows the shape and size of a sound wave.The diagram shows the waves for whistle 2 and whistle 3.Compare the loudness of whistle 2 and whistle 3.whistle 2 is louder than whistle 3not enough informationwhistle 3 is louder than whistle 2whistle 2 is the same as whistle 345. Here are some statements about the solar system.A. The Earth orbits the Sun.B. The Earth spins on its axis.C. The Moon orbits the Earth.D. The stars orbit the Sun.E. The Sun orbits the Earth.What letter of the statement answers this question.Why does the Sun appear to move across the sky each day?DACEB46 out of 45Time is Up!
