PAPER. Practice Questions SCIENCE. International Competitions and Assessments for Schools STUDENT S NAME: DO NOT OPEN THIS BOOKLET UNTIL INSTRUCTED.

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ractice uestions nternational ompetitions and ssessments for chools U U. U : ead the instructions on the and fill in your, and. Use a 2 or pencil. o use a pen. ub out any mistakes completely.

1 ractice uestions nternational ompetitions and ssessments for chools U U. U : ead the instructions on the and fill in your, and. Use a 2 or pencil. o use a pen. ub out any mistakes completely. ou U record your answers on the. ark only answer for each question. our score will be the number of correct answers. arks are deducted for incorrect answers. Use the information provided to choose the answer from the four possible options. n your fill in the oval that matches your answer. ou may use a calculator and a ruler.

2 . he graph shows the number of each type of bee caught in different coloured traps during an experiment. umber of bees caught blue green red white yellow olour of trap honey bee bumble bee native bee hat was the colour of the trap in which most of the honey bees were caught? () () () () blue green white yellow 2. hen a meteor from outer space hits the moon, its impact makes a large crater. he drawing gives information about a crater on the moon. rock ejected by the meteors impact meteor impact melted rock broken pieces of older rock crater cracked bed rock ccording to the diagram, what type of rock would be found on the craters surface? () () () () ejected rock cracked bed rock melted rock and ejected rock melted rock and broken older rock cience ractice uestions aper 2

3 3. n ant is shown at its actual size and as it appeared through a magnifying glass. ow many times larger did the ant appear through the magnifying glass? magnified ant () () () () half as large one and a half times as large twice as large two and a half times as large actual size ant 4. iscosity is a measure of a liquids thickness and stickiness. he more viscous the liquid, the longer it takes for an object to pass through it. enerally, the viscosity of a liquid decreases as temperature increases. he diagram shows the distances clay balls of the same size pass through four motor oils in the same time. he four oils were at the same temperature. hen cold, high viscosity motor oil may not get to the part of the engine it is supposed to protect. hen hot, low viscosity oil may not protect engine parts because it does not stick to them. hich motor oil would be best for protecting engine parts at high temperatures? () () () () 3 cience ractice uestions aper

4 or questions 5 and 6 use the information below. ome students wanted to know what effect the position of the mast had on the speed of a sailboat. hey made four model sailboats (,, and ) using the design shown. he sailboats were the same except for the positions of their masts. ach mast was placed a different distance from the bow. he graphs show the distances from the bow to the mast for each of the boats and the distances each boat travelled in 5 minutes. 5. hich diagram shows the mast position for the fastest sailboat? 6. he students thought that changing the size of the cardboard sail would affect the boats speed. hich of the three slower boats would then need the least change to its sail size to reach the same speed as the unchanged fastest boat? () () () () cience ractice uestions aper 4

5 or questions 7 and 8 use the information below. ome students were asked to rate the health of a local river. he map shows what they found in and around the river. he arrows on the map indicate the direction of water flow. he students rated the health of the river as poor in five of the six categories. iver health category ndicators of good health ndicators of poor health. and use river bank is natural and undisturbed river bank land has been cleared, factories present 2. itter river in natural state plastic and large growths of algae in river 3. ipes and drains no pipes or drains enter river pipes from factories and stormwater drains enter river 4. tructures no structures, no changes to water flow 5. egetation mainly native plants growing on river bank large structures, changes to water flow many non-native plants growing on river bank 6. ater clarity water in river is colourless water in river is brown or green, oil film on top of water 7. or which category is there no evidence of poor health? () 2 only () 3 only () 5 only () 6 only 8. hich position in the waterway (,, or ) is most likely to have the best health rating? () () () () 5 cience ractice uestions aper

6 or questions 9 and use the information below. ud bricks are made from a mixture of clay, sand and straw. he mixture is poured into a wooden mould until it becomes firm. he moulded bricks are then turned out of the moulds and dried over time in the sun. he table gives some information about mud bricks made by some students. ach student used the same amount of water and made the same amount of brick mixture. tudent omposition by volume (%) rick making nformation lay and traw traw length (cm) ize (cm 3 ) (length width thickness) urning time (hours) rying time (days) an ohn ary att fter days ans bricks were dry on both sides, but atts bricks were dry on one side only. hat would most likely account for this difference? () () () () an used more sand to make each brick than att. an used less water to make her bricks than att. atts bricks were thicker than ans bricks. att turned his bricks so that one side never faced the sun.. he diagram shows how the students tested their mud bricks to see which one was strongest. arys bricks were the strongest. hich characteristic of the strongest brick distinguishes it from the other bricks? () () () () brick width drying time straw length brick composition cience ractice uestions aper 6

7 his page may be used for working. cience ractice uestions aper 7

8 cknowledgment opyright in this booklet is owned by ducational ssessment ustralia, U lobal ty imited, unless otherwise indicated. very effort has been made to trace and acknowledge copyright. ducational ssessment ustralia apologises for any accidental infringement and welcomes information to redress the situation. he following year levels should sit aper: ustralia ear 5 runei rimary 5 ong ong rimary 5 ndonesia ear 6 alaysia tandard 5 ew ealand ear 6 acific ear 5 ingapore rimary 4 outh frica rade 5 U U ducational ssessment ustralia eaa.unsw.edu.au 2 ducational ssessment ustralia. is an education group of U lobal ty imited, a not-for-profit provider of education, training and consulting services and a wholly owned enterprise of the University of ew outh ales

9 to appear on certificate to appear on certificate re you male or female? ale emale oes anyone in your home usually speak a language other than nglish? es o chool name: own suburb: odays date: ostcode: ay onth ear (optional) U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U : ub out all mistakes completely. rint your details clearly in the boxes provided. ake sure you fill in only one oval in each column. : ebbie ach 2: han i eng 3: amal bin bas U U *4565* aper nternational ompetitions and ssessments for chools U

10 U xample: ri added cordial to water to make a jug of drink. hat will be the volume of the drink in the jug? () () () () 5 m 5 m 2 m 25 m he answer is 25 m, so you would fill in the oval, as shown our privacy is assured as fully complies with appropriate ustralian privacy legislation. isit for more details. aper nternational ompetitions and ssessments for chools

11 U key reasoning U he question only refers to the honey bee not any of the others, thus we only look at the honey bee (blue) column (bar) graph. rom the graph, the highest honey bee column (bar) is for the white trap. rom the diagram, melted rock and broken pieces of older rock are found on the craters surface. jected rock has been ejected from the crater and so will not be found on the craters surface, so answers and are wrong. he bed rock is underneath the craters surface, so is wrong. he length of the magnified ants body is about 2 mm while its actual length is about 6 mm. his makes the magnified ant 2 = 2 twice as large. 6 (ote that when printing out these questions, some printers may distort the size of the image.) he question only refers to high temperatures. he oil with the greatest viscosity is needed as this type of oil will best stick to the engine parts at high temperatures. he oil with the greatest viscosity is the one in which the ball travels the smallest distance in the same time i.e. the ball drops through it the slowest. rom the first (yellow) graph, we can deduce that option is boat, is boat, is boat and is boat, as the distance of the mast gets further away from the bow. he speed of the boats is determined by the distance they travelled in 5 minutes, so we must use the second (blue) graph. he fastest boat will travel the greatest distance in 5 minutes; boat is the fastest. iagram shows the mast position for this boat. Using the second (blue) column (bar) graph, boat is the second fastest boat, as it travels the second greatest distance in 5 minutes. his boat would need only a slightly larger sail to sail as fast as boat. here are two large areas of algal growth, so is wrong. here are three pipes from factories and one stormwater pipe, so is wrong. here is an oil film behind the concrete wharf, so is wrong. ption is correct because the riverbanks have only native plants, including native mangroves, growing on them. is just below the stormwater drain. is just downstream of two large algal areas. is an area covered with an oil film. is upstream of all this, with banks covered by native plants and native mangroves. hat was different between ans and atts brick? he percentage of sand was the same and so was the size of the brick, so is wrong. ach student used the same amount of water, so is wrong. he sizes of the bricks were the same, so is wrong. he correct answer is as it is the only thing att and an did differently. f, over the course of days, att turns over the brick at 7 am and again 2 hours later at 7 pm, only one side of the brick would face the un. he drying time of arys brick is the same as all the others, so is wrong. he straw length of her brick is the same as atts, so is wrong. er brick composition is the same as ohns so is wrong. nly the width of her brick is different (5 x 3 x 5). asy asy edium ediumard ediumard ediumard ediumard edium edium ediumard cience ractice uestions aper

12 evel of difficulty refers to the expected level of difficulty for the question. asy edium ediumard ard more than 7% of candidates will choose the correct option. about 57% of candidates will choose the correct option. about 35% of candidates will choose the correct option. less than 3% of candidates will choose the correct option. cience ractice uestions aper

PAPER. Practice Questions SCIENCE. International Competitions and Assessments for Schools STUDENT S NAME: DO NOT OPEN THIS BOOKLET UNTIL INSTRUCTED.

PAPER. Practice Questions SCIENCE. International Competitions and Assessments for Schools STUDENT S NAME: DO NOT OPEN THIS BOOKLET UNTIL INSTRUCTED. ractice uestions nternational ompetitions and ssessments for chools U U. U : ead the instructions on the and fill in your, and. Use a 2 or pencil. o use a pen. ub out any mistakes completely. ou U record