Welcome to your British Lower Secondary/Junior Checkpoint Mock Exams(Science) NAME EMAIL PHONE NUMBER 1. 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 MJ600 MJ400MJ1400 MJ300 MJ2. 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 dietspeeds up the movement of waste out of the bodyprevents constipationgood source of diethelps prevent bowel cancerkeeps the digestive system healthy3. 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 made from grains of rock that are cemented(stuck) together.sedimentaryigneousmetamorphicall of the above4. The diagram shows part of an electromagnet. Which material is used to make part B.Choose words from the list.air copper glass iron paperironglasscopperpaper5. 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 EXCEPTunusual resultsget the largest valueidentify anomalouschecking reliability6. Given the table below. Decide if the information indicates that the element is a metal or a non-metal. B and D in ordermetal, non-metalnon-metal, metalmetal, metalnon-metal, non-metal7. Complete the word equation for photosynthesis.carbon dioxide + ........................ → glucose + .........................water as reactant and oxygen as productwater as reactant and hydrogen as productoxygen as reactant and water as producthydrogen as reactant and oxygen as product8. The Earth is made up of three layers including the core and the crust. The core is made up of mainly two metals.One of these metals is nickel.What is the name of the other metal?irongoldaluminiumcopper9. Hakeem does an experiment on sound.Hakeem connects a microphone to an oscilloscope.He places the microphone at different distances from the loudspeaker.He records the amplitude of the wave on the oscilloscope.Here are some of the results on the oscilloscope. Use the pictures to suggest which pattern best describes the results? there is no pattern in the resultsthe amplitude does not change with distancethe amplitude increases with distancethe amplitude decreases with distance10. The giant panda lives in China.The diagram shows a simple food web involving the panda. Name one primary consumer in the food web.water plantsbamboo plantgiant pandafish11. Poor diets can cause health problems.Choose phrases from the listHeart disease Tooth decay High blood pressure Little energy Poor growthToo little protein causes which health problem?heart diseaseHigh blood pressurelittle energypoor growth12. The alimentary canal consists of many different organs.Below is an image of the alimentary canal. What is the function of the stomach?it digests proteins, carbohydrates and fats and absorbs water, amino acids, sugars and fatty acidsit is where food is mixed up into a creamy liquidit is where food is chewed into smaller piecesit absorbs water13. Zainab has five chickens.Here is some information about her chickens. Zainab chooses chickens to breed from the offspring.Which ones should she choose?the ones that produce the most eggsnot enough informationthe ones that produce the less eggsany one female with the male14. Zainab has five chickens.Here is some information about her chickens. Other qualities can be used when selectively breeding chickens.Pick the most usefulresistance to diseasenumber of featherscolour of featherslow life expectancy15. 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 findsHow does the information in the table support Prediction 1?shortest time for orbitnot enough informationmercury is farther to sunlongest time for orbit16. 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?exothermicheatendothermicintrinsic17. 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.not enough informationstrength of gravity is higher on Earth than Marsmass of Earth is less than Marsstrength of gravity is less on Earth than Mars18. Chidi makes a prediction.How does the information in the table support Prediction 2?Earth is cooler than Mars but closer to the SunEarth is hotter than Mars but farther to the SunEarth is hotter than Mars but closer to the SunEarth is cooler than Mars but farther to the Sun19. 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 milk?heatconductionconvectionradiation20. 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.newtonmeterchemical balancespring balanceall of the above21. 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?YesNonot enough informationMaybe22. The giant panda lives in China.The diagram shows a simple food web involving the panda. Many of the bamboo forests in China are being cut down.This is causing the panda population to decrease.All of these are the reasons EXCEPT.lack of shelterloss of habitatlack of snailnot enough food23. Some metal railings have started to rust. Which metal were the railings made of?aluminiumleadcopperiron24. 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 feathers25. In italic is a part of a plant Choose from the list the correct function of the Rootreproductionabsorption of watertransport of water and mineralsphotosynthesis26. 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. Safia then calculates the temperature change for each reaction. One set of readings is an anomalous result.Which set?result for 4 cmresult for 6 cmresult for 2 cmresult for 5 cm27. 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?DCABE28. The giant panda lives in China.The diagram shows a simple food web involving the panda. What do the arrows in the food web show?level of hierarchyconnectorsreaction between themenergy flow29. Zainab has five chickens.Here is some information about her chickens. Zainab chooses chickens to breed from the offspring.Which ones should she choose?not enough informationthe ones that produce the less eggsthe ones that produce the most eggsany one female with the male30. 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.concentration of hydrogen peroxideparticle size of the manganese (IV) oxidesame apparatusvolume of hydrogen peroxideamount of catalyst31. 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. Explain, using the particle theory of matter, how diffusion takes place.particles remain unchangedparticles remain fixedparticles spread outparticles spread from lower regions to higher regions32. The giant panda lives in China.The diagram shows a simple food web involving the panda. Name one primary consumer in the food web.fishsnailsbamboo plantwater plants33. 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.Venus is not a source of light.Why do you think it is possible to see Venus in the night sky.Venus orbits the StarsVenus is reflecting light from the EarthVenus is reflecting light from the MoonVenus orbits part of the EarthVenus is reflecting light from the Sun34. Some metal railings have started to rust. Which two substances must be present for the railings to rust?nitrogen, waterhydrogen, nitrogencarbon dioxide, hydrogenoxygen, watercarbon dioxide, oxygen35. 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 two properties from the list make aluminium suitable for cooking pans?A and ED and BC and EC and G36. 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.all of the abovesedimentarymetamorphicigneous37. Given the table below. Decide if the information indicates that the element is a metal or a non-metal. B and E in ordermetal, metalnon-metal, metalmetal, non-metalnon-metal, non-metal38. The alimentary canal consists of many different organs.Below is an image of the alimentary canal. What is the name of part A?alimentary canaltracheatongueoesophagus39. 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 and plantseats plants onlyeats animals onlynot enough information in the diagram40. The Earth is made up of three layers including the core and the crust. What is the approximate age of the Earth?2100 million years old1200 million years old4600 million years old1.1 million years old3200 million years old41. Zainab has five chickens.Here is some information about her chickens. Other qualities can be used when selectively breeding chickens.Pick the most usefullow life expectancyamount of milk producedsize of eggsnumber of feathers42. Poor diets can cause health problems.Iman and Mike look at information about the amount of fat and fibre in different fruits. Mike thinks the information in the table is not a fair comparison because thefruits are different shapes.Lee thinks it is not a fair comparison but he knows that the shape of the fruit isnot important.What measurement can't they use to make it a fair comparison?sizetemperaturemassvolume43. 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 dietspeeds up the movement of waste out of the bodykeeps the digestive system healthyhelps prevent bowel cancergood source of dietprevents constipation44. 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 liquid at room temperature (20°C)?mercurygoldsodiumironoxygen45. 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.greater thanthe same asless thannot enough information46 out of 45Time is Up!
