I SCIENCE REVISION. 1. a) Draw an animal cell and plant cell. Label the parts

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1 SCIENCE REVISION 1. a) Draw an animal cell and plant cell. Label the parts b) Write three differences between animal cell and plant cell 2) (a) Draw a line from each circuit symbol below to the correct name. Draw only four lines. circuit symbol name ammeter I I switch motor battery bulb b) Fred made circuit 1 as shown below. Give the name of the part that is the energy source for the circuit circuit 1

2 (c) Fred then made circuit 2 as shown below. circuit 2 In the table below, tick a box to show whether circuit 1 and circuit 2 are series or parallel circuits. Tick only two boxes. series parallel circuit 1 circuit 2 (d) What metal is usually used for wires in electric circuits? e).orna built the orcuit drawn below. All the bulbs are identical. D A B :a) Complete the table below by wnbng on or off for each bulb. One has been done for you. switch bulb s, 52 A B c D open open off off off off open closed closed closed open closed

3 3) The drawing below shows a garden water feature. It is solar-powered. solar cell motor and pump pipe from pump to jug wires to motor The solar cell absorbs energy from the Sun. The solar cell is connected to a motor in the bowl. The motor drives a pump. Water is pumped up to the jug and it flows back down to the bowl. {a) Use the information above to help you to complete the following sentences. Choose words from the list. chemical electrical gravitational potential kinetic light sound thermal (i) The useful energy change in the solar cell is from light to _ energy. (ii) The useful energy change in the motor is from electrical energy to energy. As the water flows from the jug to the bowl changed into energy. energy is b) Give one advantage and one disadvantage of using a solar cell to power the water feature.

4 4) a) State four functions of the skeleton. b) Muscles work in pairs. ( Choose the correct answer) A. Opposing B. Connecting C. Unity 0. Three (c) The drawing below shows two small bones from the backbone. Between the small bones there is a material called cartilage. Cartilage is softer than bone. Give one advantage of having a softer material between the bones. (d) The diagram below shows the bones and two muscles of an arm. shoulder blade biceps The biceps and triceps are muscles which raise and lower the forearm. What happens to the biceps and triceps to raise the forearm? the biceps the triceps

5 Q5 )The drawing below shows a solar panel fixed to the roof of a house in Britain. (a) Daniel measured the energy output from this solar panel during one day in June. The graph below shows his results energy output 0.6 (kj/s) I I I I - 1 I i\ \ 'L I 17 I\ I I ' \ I If I 0 2am 4am 6am Sam 10am noon 2pm 4pm 6pm 8pm 10pm 12pm \ I / '\. I/ <, time of day - ( Why does the energy output from the solar panel vary during the day? (ii) Daniel used the solar panel to run a motor. The motor needs 0.7 kj/s to run at full speed. Use the graph to find how long Daniel's motor would run at full speed. hours (b) (ij The solar cells cannot work at night. Give the reason for this. 1 ma (ii) The wind turbine cannot generate electricity all the time. Give the reason for this. 1 ma

6 Q 6 ) Diagrams A, B and C show three pieces of apparatus for separating substances. (a) Draw a line from each apparatus to the name of the method of separation. Draw onjy three lines. diagram of apparatus method of separation chromatography A - B L distillation _] t t 9 ' ' t t c filtration L crystallisatlo::==j b) Debbie has a mixture of sand and salt water. Look at the diagrams above. (i) Which apparatus would Debbie use to separate the sand from the salt water? Give the correct letter. (ii) Which apparatus would she use to separate pure water from the salt water? Give the correct letter. iii) Which one of the following methods is used to separate the colours in food dyes? Give the correct letter.

7 6. The table below gives infonnation about three fuels that can be used in cars../ shows a substance is produced when the fuel burns. X shows a substance is not produced when the fuel burns. fuel some of the substances produced energy physical when the fuel burns released, state in kj/kg carbon sulphur water monoxide dioxide petrol liquid /././ hydrogen gas x x./ ethanol (alcohol) liquid / x./ a) Which fuel, in the table, releases the least energy per kilogram (kg)? b) Some scientists say that if hydrogen is burned as a fuel there will be less pollution. From the information in the table, give one reason why there will be less pollution. c) Which of the three fuels in the table can be compressed into a small container? d) Which gas in the air is needed for fuels to bum e) Petrol and ethanol are both fuels. Petrol is made from oil. Scientist say that oil could run out in I 00 years. In some countries people plant sugar cane and use it to make ethanol. Sugar cane will not run out.why. f) What are hydrocarbons. Give two examples

8 A scientist put a piece of the meteorite in water and stirred rt. This produced a blue solution with tiny, solid, black particles in it. He separated the black particles from the blue solution using the apparatus below. (i) Give the name of this method of separation. M'--- mixture of black particles and blue solution flask (ii) The diagram below shows the results. What do the labels A and B show? Write your answers on the lines. flask (c) The scientist poured the contents of the flask into a dish. Two days later there were blue crystals in the dish, but no liquid. l at the start f lc.1sl!re.ai}llrl!?.s!tlfmo::j--- blue crystals two days later What happened to the liquid in the dish?

9 Rema used the apparatus below to distil I 00 cm3 of water-soluble ink. thermometer -- condenser glass tube ink f heat cold water in apparatus A (a) Which processes occur during distillation? Tick the correct box. condensation then evaporation D evaporation then condensation D melting then boiling melting then evaporation D D (b) Give the name of the colourless liquid that collects in the test-tube. (c) What would the temperature reading be on the thermometer when the ink has been boiling for two minutes? oc

10 (e) Peter used the apparatus below to distil 100 cm3 of water-soluble ink. thermometer--.. ; glass tube ink t heat apparatus B Why is the condenser in apparatus A better than the glass tube and beaker of water in apparatus B? not to s,