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. The Earth is made up of three layers including the core and the crust. What is the approximate age of the Earth? 4600 million years old 2100 million years old 1.1 million years old 3200 million years old 1200 million years old2. 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. volume of hydrogen peroxide particle size of the manganese (IV) oxide amount of catalyst concentration of hydrogen peroxide same apparatus3. 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? intrinsic heat exothermic endothermic4. 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? C and G C and E A and E D and B5. A car is driving along a road. What type of motion is exhibited by the car? random rotational oscillatory translational vibrational6. The diagram shows a palisade cell.Which one structure, labelled in the diagram, is not found in animal cells? vacuole nucleus cytoplasm cell membrane7. A car is driving along a road. Complete the sentences about the carThe car is slowing down. The forces that slow the car down are ............................and .................................... gravity and friction chemical and kinetic air resistance and elastic air resistance and friction gravity and kinetic8. The diagram shows a palisade cell.Which one structure, labelled in the diagram, is not found in animal cells? cell membrane cytoplasm nucleus cell wall9. 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? poor growth little energy heart disease High blood pressure10. 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? conduction convection radiation heat11. Given the table below. Decide if the information indicates that the element is a metal or a non-metal. A and C in order non-metal, metal metal, non-metal non-metal, non-metal metal, metal12. The diagram shows the particle arrangement in a liquid. suggest the particle arrangement in a solid. more spaced out as that of gas loosely held tightly packed the same as that of liquid13. 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. strength of gravity is higher on Earth than Mars not enough information mass of Earth is less than Mars strength of gravity is less on Earth than Mars14. 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 EXCEPT checking reliability get the largest value identify anomalous unusual results15. 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? copper iron gold aluminium16. 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 diet speeds up the movement of waste out of the body helps prevent bowel cancer keeps the digestive system healthy prevents constipation good source of diet17. 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 useful low life expectancy, amount of milk produced size of eggs, resistance to disease resistance to disease, number of feathers size of eggs, amount of milk produced18. Zainab has five chickens.Here is some information about her chickens. Other qualities can be used when selectively breeding chickens.Pick the most useful number of feathers resistance to disease colour of feathers low life expectancy19. 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. All BUT ONE are reasons Taraoluwa and Kafeel put 10 cm³ of algae into each flask? to control a variable to see if the algae will die so they start with same amounts to allow comparisons to be made20. 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. not enough information whistle 2 is the same as whistle 3 whistle 2 is louder than whistle 3 whistle 3 is louder than whistle 221. Given the table below. Decide if the information indicates that the element is a metal or a non-metal. C and E in order metal, metal metal, non-metal non-metal, non-metal non-metal, metal22. 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? mercury is farther to sun longest time for orbit not enough information shortest time for orbit23. 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 results the amplitude decreases with distance the amplitude increases with distance the amplitude does not change with distance24. The diagram shows a palisade cell.Which three structures, labelled in the diagram, are not found in animal cells? nucleus, cytoplasm, cell wall cell membrane, vacuole, chloroplast chloroplast, vacuole, cell wall cytoplasm, cell membrane, nucleus25. The giant panda lives in China.The diagram shows a simple food web involving the panda. One of these is a producer giant panda bamboo plant snails fish26. 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 ......................... fastest slowest carbon dioxide the same sugar27. Chidi makes a prediction.Does the information in the table support Prediction 2? No Yes maybe not enough information28. 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 see if the algae will die to control a variable so the algae could grow to have a fair test29. Poor diets can cause health problems.Choose phrases from the listHeart disease Tooth decay High blood pressure Little energy Poor growthToo little carbohydrate causes which health problem? poor growth High blood pressure tooth decay little energy30. The alimentary canal consists of many different organs.Below is an image of the alimentary canal. What is the function of the small intestine? it is where food is mixed up into a creamy liquid it absorbs water it digests proteins, carbohydrates and fats and absorbs water, amino acids, sugars and fatty acids it is where food is chewed into smaller pieces31. The alimentary canal consists of many different organs.Below is an image of the alimentary canal. What is the function of the large intestine? it digests proteins, carbohydrates and fats and absorbs water, amino acids, sugars and fatty acids it is where food is mixed up into a creamy liquid it absorbs water it is where food is chewed into smaller pieces32. 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. all of the above sedimentary metamorphic igneous33. 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 cm result for 2 cm result for 6 cm result for 5 cm34. 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 diet helps prevent bowel cancer speeds up the movement of waste out of the body prevents constipation good source of diet keeps the digestive system healthy35. 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 do some stars appear in the summer night sky but not in the winter night sky? C E D B A36. 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? B D C A E37. The alimentary canal consists of many different organs.Below is an image of the alimentary canal. What is the name of part A? oesophagus trachea alimentary canal tongue38. 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. whistle 2 is lower than whistle 3 whistle 2 is the same as whistle 3 not enough information whistle 3 is lower than whistle 239. 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 hierarchy reaction between them energy flow connectors40. The diagram shows part of an electromagnet. Which material is used to make part A.Choose words from the list.air copper glass iron paper glass copper iron air41. Some metal railings have started to rust. All BUT ONE are ways to prevent railings from rusting? coat in oil galvanise cover the railings paint42. 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. chemical balance spring balance newtonmeter all of the above43. Given the table below. Decide if the information indicates that the element is a metal or a non-metal. C and D in order metal, non-metal metal, metal non-metal, metal non-metal, non-metal44. 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. metamorphic all of the above sedimentary igneous45. This is a question about forces.Look at the diagrams below.Which diagram shows a turning force? C D B E46 out of 45Time is Up!
