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Science PRACTICE QUESTIONS PA PE R D Read the instructions on the ANSWER SHEET and fill in your NAME , SCHOOL and OTHER INFORMATION . Use a pencil. Do NOT use a coloured pencil or a pen. Rub out any mistakes completely. Yo u MUST record your answers on the ANSWER SHEET . Mark only ONE answer for each question. Your score will be the number of correct answers. Marks are NOT deducted for incorrect answers . Use the information provided to choose the BEST answer from the four possible options. On your ANSWER SHEET fill in the oval that matches your answer . You may use a calculator and a ruler. DO NOT OPEN THIS BOOKLET UNTIL INSTRUCTED. Note : Some UNSW Global assessments are only available online.

© UNSW Global Pty Limited 2 1. The table gives information about rocks gathered on a beach. Shape Length (cm) Colour 6½ silver grey and black patches egg-like flat disc-like 5pinkish white with black glassy spots rounded disc-like 4glassy white egg-like 3white with black spots Which two shapes describe the four rocks? (A) round, spotty (B) white, black (C) disc, egg (D) dull, glassy

3 © UNSW Global Pty Limited For questions 2 and 3 use the information below. Some students tested four white powders. The table gives their results. Powder T est Do the powder and water form a clear mixture? What colour do es red cabbage juice turn when the powd er is placed in it? Do drops of white vinegar on the powder cause bubbles to form? Do drops of yellow iodine turn black when placed on the powder? no blue noyes baking sod corn flour a yes blue yesno washing sod ayes green yesno epsom salt yesblue nono Cornflour The students constructed a flow chart to show how they distinguished between the four powders using some of the tests in the table. Powder T est Do the powder and water form a clear mixture? What colour do es red cabbage juice turn when the powd er is placed in it? Do drops of white vinegar on the powder cause bubbles to form? Do drops of yellow iodine turn black when placed on the powder? no blue noyes baking sod corn flour a yes blue yesno washing sod ayes green yesno epsom salt yesblue nono Cornflour 2. Which substance is powder S? (A) cornflour (B) baking soda (C) washing soda (D) epsom salt 3. The students did not use the test for identifying powders containing starch to make their flow chart. Which powder contained starch? (A) Q (B) R (C) S (D) T

© UNSW Global Pty Limited 4 4. The graph shows the average distance from the Sun and the average daytime temperature for some planets in the solar system. KEY average distance from Sun (million km ) enus Secondary Consumer Food chain 1 Food chain 2 Generally, the further a planet is from the Sun, the colder its average daytime t\ emperature will be. According to the graph, which planet does not follow this trend? (A) Mercury (B) Venus (C) Earth (D) Mars 5. The diagrams below show the relationship between the numbers of producers and consumers in two food chains. KEY average distance from Sun (million km ) enus Secondary Consumer Food chain 1 Food chain 2 Which of the following statements is supported by the information above?\ In a food chain (A) there are more primary consumers than there are secondary consumers. (B) there are more primary consumers than there are producers. (C) primary consumers are larger than secondary consumers. (D) primary consumers are usually insects that eat plants. END OF PAPER

Print your details clearly in the boxes provided. Make sure you fill in only one oval in each column. Rub out all mistakes completely. Do not use a coloured pencil or pen. HOW TO FILL OUT THIS SH\ EET: USE A PENCIL FIRST NAME to appear on certifi\icate LAST NAME to appear on certifi\icate A A A A A A A A A A A A A A A A A A A B B B B B B B B B B B B B B B B B B B C C C C C C C C C C C C C C C C C C C D D D D D D D D D D D D D D D D D D D E E E E E E E E E E E E E E E E E E E F F F F F F F F F F F F F F F F F F F G G G G G G G G G G G G G G G G G G G H H H H H H H H H H H H H H H H H H H I I I I I I I I I I I I I I I I I I I J J J J J J J J J J J J J J J J J J J K K K K K K K K K K K K K K K K K K K L L L L L L L L L L L L L L L L L L L M M M M M M M M M M M M M M M M M M M N N N N N N N N N N N N N N N N N N N O O O O O O O O O O O O O O O O O O O P P P P P P P P P P P P P P P P P P P Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q R R R R R R R R R R R R R R R R R R R S S S S S S S S S S S S S S S S S S S T T T T T T T T T T T T T T T T T T T U U U U U U U U U U U U U U U U U U U V V V V V V V V V V V V V V V V V V V W W W W W W W W W W W W W W W W W W W X X X X X X X X X X X X X X X X X X X Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ – – – – – – – – – – – – – – – – – – – / / / / / / / / / / / / / / / / / / / DATE OF BIRTH STUDENT IDCLASS DayMonth \bear (optional) (optional) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 A K 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 B L 2 2 2 2 2 2 2 2 2 2 2 2 2 2 C M 3 3 3 3 3 3 3 3 3 3 3 3 3 3 D N 4 4 4 4 4 4 4 4 4 4 4 4 4 E O 5 5 5 5 5 5 5 5 5 5 5 5 5 F P 6 6 6 6 6 6 6 6 6 6 6 6 6 G Q 7 7 7 7 7 7 7 7 7 7 7 7 7 H R 8 8 8 8 8 8 8 8 8 8 8 8 8 I S 9 9 9 9 9 9 9 9 9 9 9 9 9 J T A A A A A A A A A A A A A A A A A A A A A A A A B B B B B B B B B B B B B B B B B B B B B B B B C C C C C C C C C C C C C C C C C C C C C C C C D D D D D D D D D D D D D D D D D D D D D D D D E E E E E E E E E E E E E E E E E E E E E E E E F F F F F F F F F F F F F F F F F F F F F F F F G G G G G G G G G G G G G G G G G G G G G G G G H H H H H H H H H H H H H H H H H H H H H H H H I I I I I I I I I I I I I I I I I I I I I I I I J J J J J J J J J J J J J J J J J J J J J J J J K K K K K K K K K K K K K K K K K K K K K K K K L L L L L L L L L L L L L L L L L L L L L L L L M M M M M M M M M M M M M M M M M M M M M M M M N N N N N N N N N N N N N N N N N N N N N N N N O O O O O O O O O O O O O O O O O O O O O O O O P P P P P P P P P P P P P P P P P P P P P P P P Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q R R R R R R R R R R R R R R R R R R R R R R R R S S S S S S S S S S S S S S S S S S S S S S S S T T T T T T T T T T T T T T T T T T T T T T T T U U U U U U U U U U U U U U U U U U U U U U U U V V V V V V V V V V V V V V V V V V V V V V V V W W W W W W W W W W W W W W W W W W W W W W W W X X X X X X X X X X X X X X X X X X X X X X X X Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ – – – – – – – – – – – – – – – – – – – – – – – – / / / / / / / / / / / / / / / / / / / / / / / / Are you male or fema\Mle? Male Female Does anyone in your h\Mome usually speak a language othe\Mr than English? \be s No School name: Town / suburb: Today’s date: / / Postcode: PAPER EXAMPLE 1: Debbie Bach FIRST NAME LAST NAME ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD EEEE EEE EE EEE EXAMPLE 3: Jamal bin Abas FIRST NAME LAST NAME ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD EEEEEE EEE EEEE EXAMPLE 2: Chan Ai Beng FIRST NAME LAST NAME ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD EE EEE EEEEE EEE S SAMPLE PA PE R D *201906*

TO ANSWER THE QUESTIONS Example: 1 A B C D 2 A B C D 3 A B C D 4 A B C D 5 A B C D START Ari added cordial to water to make a jug of drink. What will be the volume of the drink in the jug? (A) 50 mL (B) 150 mL (C) 200 mL (D) 250 mL The answer is 250 mL, so you would fill in the oval D, as shown. D C B A USE A PENCIL \bO NOT USE A COLOURE\b PENCIL OR PEN S TO ANS For details on how \mwe handle your personal information, please see our Privacy Policy on our we\bsite at unswglobal.unsw.edu.au PA PE R D

7 © UNSW Global Pty Limited \ ICAS Science Practice Questions Paper D © EAA QUESTION KEYLEVEL OF DIFFICULTY 1 C So me rocks are flat wh ile others are rounded, but all are either disc-like or eg g-like. Easy 2D Start at the top of the flow chart and use information from the table. Of the r four powders, only T (cornflour) does not form a clear mixture with wate . Of the remaining three powders, only S (Epsom salts) does not bubble when white vinegar is added. Medium 3D There are four tests; (1) mix with water, (2) mix with red cabbage juice, (3) mix with white vinegar and (4) mix with yellow iodine solution. Starting at the top of the chart, test 1 is performed, and then test 3 a\ nd finally test 2. This means that test 4 is the test that was not performed and so\ it must be the test that indicates the presence for starch. From the table, this last test indicated that cornflour is the only substance that contains starch. The next step is to identify which substance (Q, R, S or T) is cornfl our. Fr o m t h e table, cornflour is the onl y substance that does not form a clear mixture with water. Start at the top of the flow chart. Of the four p owders, only T does not f orm a clear mixture with water. Hence, powder T is cornfl our and contains starch. Medium/Hard 4B To answer the question, we have to ask the following: as the spotted grap\ h goes up (increasing distance away from the Sun), does the purple graph (average daytime temperature) always go down? The average daytime temperature of Venus is higher (not lower) than Mercury’s average daytime temperature even though it is further from the Sun. It should be noted that the daytime temperature of Mars is below Earth’s daytime temperature. Medium/Hard 5A In a food chain the producers are always plants. The graphs representing the two food chains show the number of individuals that are producers, primary consumers and secondary consumers. In food chain 1, there are more producers than consumers. In food chain 2, the size of the individuals mat\ ters more than the numbers of individuals. Because the trees are large and the caterpillars are small, few trees feed many caterpillars. However, in both food chains, there are more primary consumers than secondary consumers. Hard KEY REASONING LEGEND Level of difficulty refers to the expected level of difficulty for the question. Easy more than 70% of candidates will choose the correct option. Medium about 50–70% of candidates will choose the correct option. Medium/Hard about 30–50% of candidates will choose the correct option. Hard less than 30% of candidates will choose the correct option.

© 2019 Copyright. Copyright in this publication is owned by UNSW Global Pty Limited, unless other wise indicated or licensed from a third party. This publication and associated testing materials and products may not be reproduced, published or sold, in whole or part, in any medium, without the permission of UNSW Global Pty Limited or relevant copyright owner. 1 All international schools registered with UNSW Global (which have an 8-digit school code star ting with 46) should sit the papers according to the Australian year levels. 2 Indian Subcontinent Region: India, Sri Lanka, Nepal, Bhutan and Bangladesh. 3 Middle East Region: United Arab Emirates, Qatar, Kuwait, Saudi Arabia, Bahrain, Oman, Turkey, Lebanon, Tunisia, Morocco, Libya, Algeria, Jordan and Pakistan. 4 Pacific Region: Vanuatu, Papua New Guinea and Fiji.5 Southern Africa Region: South Africa, Botswana, Lesotho, Swaziland, Zimbabwe and Namibia. THE FOLLOWING YEAR LEVELS SHOULD SIT THIS PAPER Australia 1 Year 6 Brunei Primary 6 Egypt Year 6 Hong Kong Primary 6 Indian Subcontinent 2 Class 6 Indonesia Year 7 Malaysia Standard 6 Middle East 3 Class 6 New Zealand/ Pacific 4 Year 7 Singapore Primary 5 Southern Africa 5 Grade 6 PA PE R D