UNIQUE SCIENCE ACADEMY

Transcription

1 UNIQUE SCIENCE ACADEMY Test (Unit 1) Name :... Paper: Physics Date :... Class: C1A Time Allowed: Minutes Maximum Marks: 2 [Total 1 Marks] 1 Five identical steel balls are measured with a rule graduated in cm, as shown in Fig Theory Section: wooden block cm Fig. 1.1 (a) Use Fig. 1.1 to find the diameter of one ball. diameter of ball =... cm [2] (b) What instrument would be used to measure the mass of a ball?... [1] (c) Here are two statements made by people who haven t learned their Physics very well. Each statement is incorrect. In the space alongside each statement, say what is wrong with the statement. statement what is wrong with this statement The weight of this bag of peas is 1 kg. The mass of this object is another name for its weight. [2] [Total: ]

2 2 2 The clock on a public building has a bell that strikes each hour so that people who cannot see the clock can know what hour of the day it is. At precisely 6 o clock, the clock starts to strike. It strikes 6 times. At the first strike of the bell, a man s wrist-watch is as shown in Fig Fig.2.1 When the bell strikes for the sixth time, the wrist-watch is as shown in Fig (a) Fig.2.2 Calculate the time interval between the 1st strike and the 6th strike. (b) time interval = s [1] Calculate the time interval between one strike and the next. (c) At precisely 11 o clock, the clock starts to strike. Calculate the time interval between the 1st strike and the 11th strike. time interval = s [2] time interval = s [2] [Total: ]

3 The mechanical stop-clock shown in Fig..1 has a seconds hand, which rotates once every minute and a minutes hand, which rotates once every hour. start reset stop 60 0 minutes hand 0 1 seconds hand 0 2 Fig..1 (a) A student uses the clock to time the intervals between trains travelling along the railway past his school. He sets the clock to zero (both hands vertical). As train 1 passes, he starts the clock and leaves it running. After s, train 2 passes. On the blank face of Fig..2, show the positions of the two hands of the clock as train 2 passes. Make sure it is clear which hand is which. [2] Fig..2 2

4 (b) Train passes the school minutes and s after the clock was started. On the blank face of Fig.., show the positions of the hands of the clock as train passes. [2] Fig.. (c) Calculate the time interval between train 2 and train. MCQ SECTION: [Total Marks] 1 Power is measured in watts. What is the correct symbol for thousands of watts? time interval =... min... s [1] [Total: ] A kw B kw C Kw D KW 2 The diagram shows a micrometer scale. 0 mm 1 Which reading is shown? A.6 mm B 7.1 mm C 7.16 mm D 7.6 mm

5 One oscillation of a swinging pendulum occurs when the bob moves from X to Y and back to X again. bob X Y Using a stopwatch, which would be the most accurate way to measure the time for one oscillation of the pendulum? A Time oscillations and multiply by. B Time oscillations and divide by. C D Time one oscillation. Time the motion from X to Y, and double it. The diagram shows part of a vernier scale. 0 mm 0 0 What is the correct reading? A 0. mm B. mm C 8.0 mm D 2. mm The diagram shows a vernier V placed against a scale S. 0 V 2 S What is the vernier reading? A 2.2 B 2.26 C 2. D 2.6

6 6 6 The diagram shows one method of measuring the diameter of a beaker. ruler cm wooden block beaker bench What is the diameter of the beaker? A. cm B.0 cm C. cm D 8.0 cm 7 In an experiment, a ball is rolled down a curved track that is about half a metre long. 0. m 8 Which measuring device should be used to measure the length accurately? A metre rule C tape measure B micrometer D vernier calipers A manufacturer needs to measure accurately the dimensions of a wooden floor tile. The approximate dimensions of the tile are shown. length 0. m thickness 0.00 m width 0.08 m Which instruments measure each of these dimensions accurately? length thickness width A metre rule micrometer vernier calipers B metre rule vernier calipers micrometer C micrometer metre rule vernier calipers D vernier calipers micrometer metre rule

7 7 9 What is the reading on this micrometer? 0 mm 1 A. mm B 6.6 mm C 7.0 mm D 8.1 mm The width of a wooden block is measured using vernier calipers. mm mm 0 wooden block What is the width of the block? A. mm B. mm C 8.0 mm D 8. mm MCQ Answer Sheet 1 A B C D 2 A B C D A B C D A B C D A B C D 6 A B C D 7 A B C D 8 A B C D 9 A B C D A B C D