Science. Year 7. Transition. Equipment allowed: calculator, pen, pencil, ruler, protractor or angle measurer, eraser. No other equipment allowed.

Transcription

1 Science Year 7 Transition Equipment allowed: calculator, pen, pencil, ruler, protractor or angle measurer, eraser. No other equipment allowed. Name Date WS: SA WS: ESI WS: AE 7

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3 Year 7 1 The diagram below shows six pieces of equipment. A B C D E F 1 (a) Linda investigates how quickly sugar dissolves in water. 1 (a) (i) Which piece of equipment does she use to weigh 5 g of sugar? Tick the correct box. A B C D E F 1 (a) (ii) Which piece of equipment does she use to measure out 90 cm 3 of water? Tick the correct box. A B C D E F 3

4 1 (b) Linda heats the water in a beaker. 1 (b) (i) Which piece of equipment shown is a beaker? Tick the correct box. A B C D E F 1 (b) (ii) Which piece of equipment shown is used to heat water? Tick the correct box. A B C D E F 1 (c) Linda adds 5 g of sugar to the hot water. 1 (c) (i) She measures the time it takes for the sugar to dissolve. The equipment used for timing is not shown in the diagram. What piece of equipment is used to measure the time taken? 1 (c) (ii) The equipment used to measure the temperature of the water is not shown in the diagram. What piece of equipment is used to measure temperature? maximum 6 marks 4

5 Turn over for the next question 5

6 2 Andrew put his rabbit s cage on the grass. A week later, the grass under the cage had turned yellow. 2 (a) Give one reason why the grass had turned yellow. 2 (b) Andrew wanted to test why the grass had turned yellow. He put two sheets of plastic just above another patch of grass. One sheet was black and the other sheet was clear. black plastic sheet clear plastic sheet A week later, the grass under the black sheet was yellow. The grass under the clear sheet was green. 2 (b) (i) Explain why he used the clear plastic sheet as well as the black sheet. 6

7 2 (b) (ii) Andrew left the black sheet there for several more weeks. What happened to the grass under it? 2 (c) Tick the boxes by two things which both rabbits and grass plants can do. they eat they grow they move from place to place they reproduce they breathe in and out 2 marks maximum 5 marks Turn over for the next question 7

8 3 (a) Tom watched birds feeding in his garden. He spotted the birds shown below. blackbird blue tit bullfinch dove sparrow robin not to scale Tom recorded what the birds in his garden ate. His results are shown below. bird type of food fruit nuts worms seeds blackbird blue tit bullfinch dove sparrow robin Use the information in the table to answer the following questions. 3 (a) (i) Tom put some pieces of fruit in his garden. Which two birds will eat this food? and 3 (a) (ii) How many types of bird eat nuts? 8

9 3 (a) (iii) Which food from the table opposite will attract the most types of bird? 3 (a) (iv) Which bird from the table eats the most types of food? 3 (b) What are birds covered with to keep them warm? 3 (c) Many birds reproduce in the spring. Suggest why birds need extra food in the spring. maximum 6 marks Turn over for the next question 9

10 4 Yasmin investigated the stopping distance of a trolley. She let go of the trolley. It hit a sponge at the bottom of the ramp. trolley book ramp sponge She measured how far the sponge moved. This is the stopping distance. stopping distance 4 (a) Yasmin did the investigation five times. She changed the steepness of the ramp each time. 4 (a) (i) How could she make this ramp steeper? 10

11 4 (a) (ii) Yasmin s results are shown in the table. steepness of ramp stopping distance (cm) A 10 B 16 C 16 D 28 E 34 She predicted, The steeper the ramp, the greater the stopping distance. If Yasmin was correct, which ramp was the steepest? Write the letter. 4 (a) (iii) Yasmin looked at her results and decided she should repeat her investigation. Look at Yasmin s results. Suggest why she decided to repeat her investigation. Question 4 continues on the next page 11

12 4 (b) Yasmin then investigated the stopping distance of a trolley with different masses on it. The graph shows her results stopping distance (cm) mass added to trolley (g) 4 (b) (i) What would be the stopping distance if 0 g were on the trolley? cm 4 (b) (ii) Complete the sentence with decreases, increases or stays the same. As the mass added to the trolley increases, the stopping distance. maximum 5 marks 12

13 5 Simon added some salt to 100 cm 3 of cold water in a beaker. He stirred the water to dissolve the salt. He added more salt until no more would dissolve. He repeated his experiment with sugar, baking powder and instant coffee powder. Each time, he used a different beaker containing 100 cm 3 of cold water. He drew a bar chart of his results. mass dissolved in g salt sugar baking powder coffee 5 (a) Describe two ways in which Simon made this experiment a fair test marks 5 (b) Which one of the four solids was most soluble in water? 5 (c) How could Simon make more salt dissolve in 100 cm 3 of water? 13 maximum 4 marks

14 6 (a) Peter used the equipment below to investigate growth of plants. equipment measurement unit measures the time for the experiment cm measures the temperature of the air C measures the length of the plant days measures the mass of a plant grams 6 (a) (i) Draw one line from each piece of equipment to the measurement Peter made. 2 marks 6 (a) (ii) Then draw one line from each measurement to the correct unit. 2 marks 14

15 6 (b) The diagrams below show four measuring containers. cm cm cm cm 3 75 A B C D Which is the best container to use to measure 15 cm 3 of water? Write the letter. Why did you choose this container? maximum 6 marks Turn over for the next question 15

16 7 The drawing shows a fish called a cod. gills 7 (a) (i) Name one part of the fish which it uses to move through the water. 7 (a) (ii) The fish has gills. What are the gills for? 7 (a) (iii) Look at the shape of the fish. How does the shape help the fish to move easily through the water? 16

17 The pie chart shows the food eaten by a cod. key: crabs and prawns shellfish worms small fish 7 (b) What is the main food eaten by a cod? 7 (c) A food chain which ends with cod is: tiny plant tiny animal small fish cod Which is the producer in this food chain? 7 (d) A cod eats other animals which live in the sea. What is the name for an animal which catches and eats other animals? Tick the correct box. herbivore predator prey producer maximum 6 marks 17

18 8 (a) Draw a line from each change of state to the correct name. Draw only four lines. change of state name solid to liquid evaporating liquid to gas melting gas to liquid condensing liquid to solid freezing 3 marks 8 (b) Kate made some ice cubes from pure water. She used a sensor to measure the temperature of the ice. C What temperature will the sensor show when the ice is melting? C 18

19 8 (c) Kate made some more ice cubes from salt solutions. She used a different amount of salt in each ice cube. The table shows the temperature at which the ice cubes melted. mass of salt in each ice cube (g) temperature ice cube melted ( C) Look at the table above. As the mass of salt increased, what happened to the temperature at which the ice cube melted? 8 (d) In very cold weather a mixture of salt and sand is spread on roads. Why are salt and sand used? Tick the two correct boxes. Salt makes the roads white. Sand dissolves in water. Salt makes water freeze. Sand increases friction between car tyres and the road. Salt makes ice melt. Sand makes water freeze. 2 marks maximum 7 marks 19

20 9 Anna has a can of deodorant that she uses once each day. Before she uses the deodorant she measures the mass of the can. 9 (a) Her results are shown in the graph below mass of can (g) day 9 (a) (i) What was the mass of the can of deodorant on day 1? g 9 (a) (ii) How did the mass change as Anna used the deodorant? 20

21 9 (a) (iii) Anna did not use the deodorant on day 6. How can you tell this from the graph? 9 (b) A deodorant contains a solution of perfume and alcohol. What happens to the perfume when it is mixed with the alcohol? Tick the correct box. It boils. It dissolves. It freezes. It melts. 9 (c) Anna sprayed the liquid deodorant under her arms. After a few minutes, her skin had dried. What happened to the liquid? Tick the correct box. It evaporated. It dissolved. It boiled. It condensed. maximum 5 marks 21

22 10 Joanne burnt four different crisps. She predicted that the bigger the crisp, the longer it will burn. 10 (a) Joanne measured the time taken for each crisp to burn completely. The bar chart shows Joanne s results time taken for crisp to burn (seconds) A B C D crisp Look at the bar chart. How much time did crisp D take to burn? seconds 22

23 10 (b) The crisps Joanne used in her investigation are shown below. crisp A crisp B crisp C crisp D 10 (b) (i) Joanne predicted that the bigger the crisp, the longer it will burn. Do the results support Joanne s prediction? Tick one box. yes no Use Joanne s results to explain your answer. 10 (b) (ii) How can you tell that Joanne did not carry out a fair test? Question 10 continues on the next page 23

24 10 (c) Joanne wrote some conclusions for her investigation. Decide whether each conclusion is true, false, or you cannot tell. Tick the correct box for each conclusion. conclusion true false cannot tell Two crisps took the same amount of time to burn. The smallest crisp burnt for the shortest time. Two of the crisps burnt with fl ames of the same size. 3 marks maximum 6 marks 24

25 Turn over for the next question 25

26 11 Leanne had four rods, each made from a different metal. She wanted to find out which metal was the best conductor of heat. The diagram shows some of Leanne s equipment. hot water metal ball stuck on with wax metal container brass rod copper rod lead rod iron rod 11 (a) Leanne s results are shown in the table. metal rod time for metal ball to drop off (seconds) brass 36 copper 24 lead 246 iron 132 What measuring equipment did Leanne use to get her results? 11 (b) Give two things Leanne must do to carry out a fair test marks 26

27 11 (c) Which metal in the table was the best conductor of heat? Tick the correct box. brass copper iron lead maximum 4 marks Turn over for the next question 27

28 12 Richard wanted to fi nd out the best conditions for growing lettuce plants. He took 4 trays and planted 8 lettuce plants in each. The results of his investigation are shown below. variables tray light level air temperature ( C) soil moisture number of plants alive after 7 days A medium 25 moist 8 B medium 25 dry 6 C medium 45 moist 2 D medium 45 dry 0 12 (a) How many days did Richard s investigation last? Use the table to help you. days 12 (b) Look at the table. Which variables did Richard change in his investigation? Tick the correct box. light level and air temperature soil moisture and type of soil air temperature and soil moisture type of soil and light level 28

29 12 (c) Richard said: Lettuce plants grow better at a medium light level than at other light levels. Why is Richard not able to make this conclusion from his investigation? 12 (d) The table below shows the number of lettuce plants alive at the end of day 1 and day 7 of the investigation. For each tray, A, B, C and D, suggest the number of plants that were alive on day 4. Write your answers in the table below. number of plants alive tray day 1 day 4 day 7 A 8 8 B 8 6 C 8 2 D marks maximum 5 marks 29

30 13 Paula made a pendulum from a ball attached to a piece of string. length of string She counted the number of swings the ball made in 10 seconds. She repeated the experiment with different lengths of string. The table below shows Paula s results. length of string (cm) number of swings in 10 seconds (a) What happens to the number of swings when the string gets longer? 30

31 13 (b) Paula drew a graph of her results. 13 (b) (i) Write the labels on both axes of the graph below. Use the table to help you marks 13 (b) (ii) Paula made a pendulum from a piece of string that was 15 cm long. How many times would this pendulum swing in 10 seconds? Use the graph to help you. 13 (b) (iii) Paula made a pendulum from a piece of string that was 60 cm long. Estimate the number of swings the pendulum makes in 10 seconds. Use the graph. Tick the best answer (c) After some time the pendulum stops moving. What force makes the pendulum stop moving? 31 maximum 6 marks

32 14 (a) The diagram shows two bar magnets. N magnet A magnet B S The north pole and south pole are shown on magnet A. The poles are not shown on magnet B. Describe an experiment you could do, using magnet A, to fi nd which end of magnet B is the north pole and which is the south pole. 3 marks 32

33 14 (b) The diagram shows a wooden truck near a wall. There is a strong magnet fixed to the wall and a strong magnet fixed to the front of the wooden truck. magnet fixed to truck magnet fixed to wall wall wooden truck S N N S table James holds the wooden truck so that it does not move. Then he lets go of the wooden truck. In which direction will it move? 14 (c) James removes the magnet from the wooden truck. He gives the truck a push so that it rolls along the table. What effect will friction have on the speed of the truck as it rolls along? maximum 5 marks Turn over for the next question 33

34 15 The animals shown below live in different parts of a river. A B C D E 15 (a) Use this key to identify animals A, B and C. animal no legs legs no shell shell 3 pairs more than 3 pairs no tail tail 4 pairs more than 4 pairs tubifex lymnaea water beetle mayfly nymph water spider water louse 15 (a) (i) Animal A is a 15 (a) (ii) Animal B is a 15 (a) (iii) Animal C is a 3 marks 34

35 15 (b) The diagram shows a river. Sewage pollutes the river at X. The amount of pollution gets less as you go down the river from X. The animals A, B, C, D and E were found living in the river at the places shown. river flow animals A, B, C and D found here X heavily polluted water less polluted water only animal E found here animals C, D and E found here animals A, B, C and D found here 15 (b) (i) Which animal survives best in polluted water? Give the letter of the animal. 15 (b) (ii) Two of the animals cannot live in polluted water. Give the letters of these two animals. and 2 marks maximum 6 marks END OF TEST 35

36 Copyright information For confidentiality purposes, from the November 2015 examination series, acknowledgements of third party copyright material will be published in a separate booklet rather than including them on the examination paper or support materials. This booklet is published after each examination series and is available for free download from after the live examination series. Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright-holders may have been unsuccessful and AQA will be happy to rectify any omissions of acknowledgements. If you have any queries please contact the Copyright Team, AQA, Stag Hill House, Guildford, GU2 7XJ. Copyright 2015 AQA and its licensors. All rights reserved.