[PDF] ICAS Practice Questions Science Paper A.pdf | Plain Text

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ICAS Science Practice Questions Paper A © EAA 2 1. Which glass object shown would be the best to measure an amount of water? (A) (B) (D) (C) 2. The drawing shows the body parts of a snail. head foot short tentacle eye long tentacle breathing hole hard shell To which part of the snail’s body is an eye attached? (A) breathing hole (B) hard shell (C) long tentacle (D) short tentacle 3. Scientists found the remains of some animals in a cave. The graph shows the number and type of the remains. leg bones Type of remains Number of remains teeth skullsbackbones 0 5 10 15 How many backbones were found? (A) 3 (B) 6 (C) 9 (D) 10

3 ICAS Science Practice Questions Paper A © EAA 4. Rocks are made up of one or more different minerals. The block below contains three different minerals. From which of these large sections of rock was the block cut? (A) (B) (C) (D) 5. Some Year 3 students saw their teacher put a plastic bag over some leaves of a plant on a sunny day. One day later, they saw drops of water on the inside of the plastic bag. The teacher explained that the water had come from the leaves of the plant. The students thought this method might also work to find out if soil has water in it. They set up the pots below and put them in a sunny place. water drops on inside of bag Pot Y Pot X bag sealed plastic bags soil empty pot bag sealed Their method of testing for water in soil worked positively. What must the students have observed in the experiment? (A) Water formed on the inside of the plastic bag over pot X only. (B) Water formed on the inside of the plastic bag over pot Y only. (C) Water formed on the inside of neither plastic bag. (D) Water formed on the inside of both plastic bags. water drops on inside of bag Pot Y Pot X bag sealed plastic bags soil empty pot bag sealed

ICAS Science Practice Questions Paper A © EAA 4 6. Liquids that spread quickly through a paper towel are absorbed better than those that spread more slowly. Some children put one measured drop of four different liquids on a piece of paper towel. The drawing shows their results after one minute. Which liquid was best absorbed by the paper towel? soap sauce (A) (B) (C) (D) milkwater 7. Rick measured a nail as shown in the diagram. 0 1 (A) (B) (C) (D) 2345 Length (cm) Measurements 6 789 01 cm 2 3 4 56 78 910 1112 Which bar on the graph represents Rick’s measurement? 0 1 (A) (B) (C) (D) 2345 Length (cm) Measurements 6 789 01 cm 2 3 4 56 78 910 1112

5 ICAS Science Practice Questions Paper A © EAA For questions 8 and 9 use the information below. Some students made phones from a ball of string and empty tin cans as shown. One student listened with her ear against this end. One student spoke with her mouth against this end. worst phone best phone string tight string loose empty tin can string They tested which string phone worked best by comparing the loudness of the voice heard at the listening end. They showed the phones in order from best phone to worst phone. One student listened with her ear against this end. One student spoke with her mouth against this end. worst phone best phone string tight string loose empty tin can string 8. Which description matches the best string phone? (A) short, loose string with small cans (B) short, tight string with large cans (C) long, tight string with large cans (D) short, tight string with small cans 9. Which condition was necessary to make this a fair test? (A) the tin cans were all the same size (B) the strings between the cans were kept tight (C) the strings between the cans were kept the same length (D) the same student listened and the same student spoke on each phone

ICAS Science Practice Questions Paper A © EAA 6 10. The Sun rises in the east and sets in the west. The drawing shows a view from above of a schoolyard early in the morning. office tree wall classrooms shadow road (A) (B)(C) (D) N S E W N S E W N S E W N S E W Which pointer is correctly showing north for this view of the schoolyard? office tree wall classrooms shadow road (A) (B)(C) (D) N S E W N S E W N S E W N S E W

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ICAS Science Practice Questions Paper A © EAA QUESTIONKEYKEY rEa SONINg LEVEL OF DIFFICULTY 1 AFour glass objects are shown: a measuring cylinder, a test tube, a round bottom flask and a funnel. Graduations (marks), which are only on the measuring cylinder, allow different amounts of water to be measured accurately. Easy 2 CObserve the diagram carefully: the eyes are at the end of the long tentacles. Easy 3 CThe column (bar) graph that represents the number of backbones is a little under 10, so (C) is the best answer. Easy 4 DOptions B, C and D all contain the three coloured minerals showing in the block, but only option (D) has the black line crossing the layers of the brown mineral and the three minerals in the correct sequence. Medium 5 AThe teacher explained that when a plastic bag was placed over a plant, the water that formed on the inside of the plastic bag had come from the plant. For the test to show that water came from the soil in the same manner, the water must form inside the plastic bag over the pot with soil in it (pot X), and water must not form inside the plastic bag over the pot with no soil in it (pot Y). Medium 6 DAs all drops were the same measured size, the fastest spreading liquid would wet the biggest area of paper. This would be the liquid that was best absorbed by the paper. Water has the biggest wet area. Medium 7 BNote that there are two scales, one for the nail and another for the graph. The nail is 4.5 cm long. The end of column A is in line with the end of the nail but the graph scale indicates that the column is only 2 cm long, and so column A is wrong. Column C is 5 cm long and column D is almost 8 cm long, so they are both wrong. Medium 8 BThere are four string phones. From the diagram, the far left phone is the best phone. It is short, it has a tight string and large cans. Medium/Hard 9 DThe students tested which phone worked best by changing the length of the string, the tightness of the string and the size of the cans. Options A, B and C describe the variables that the student changed in the test(s). Option D describes the variable that needed to stay the same. Medium/Hard 10 AAs the shadows of the trees, buildings and walls are toward the bottom left hand corner, the Sun must be toward the top right hand corner. As this is early morning and the Sun rises in the east, the top right hand corner must be east. Hard

ICAS Science Practice Questions Paper A © EAA 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.