Dubai STEM Olympiad 2019-20 Round 2 | Intermediate Category
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Why is pluto not considered a planet?
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Pluto does not produce enough gravitational force to clear similar sized objects from its orbit
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Pluto is not spherical
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Pluto has a different orbit to all the other planets in the solar system
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Pluto does not have a magnetic core
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.
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- 2.
For a third class lever, what is the order of the fulcrum, load and effort?
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Fulcrum, effort, load
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Effort, load, fulcrum
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Effort, fulcrum, load
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Load, fulcrum, effort
Correct Answer
A. Fulcrum, effort, load -
- 3.
What are three non-contact forces?
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Magnetic, Electrostatic, gravitational
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Friction, Gravitational, Electrostatic
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Tension, Gravitational, Magnetic
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Upthrust, Gravitational, Magnetic
Correct Answer
A. Magnetic, Electrostatic, gravitational -
- 4.
George saw a flash of lightning 6km away and then 20 seconds later heard thunder, approximately how fast did the sound travel?
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300m/s
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320m/s
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200m/s
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400m/s
Correct Answer
A. 300m/s -
- 5.
Samantha is trying to print her homework assignment when the paper suddenly gets jammed in the printer. The computer automatically stops printing the document. This is a because a/an _____________ signal is sent from the printer to the processor. Fill in the blank
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Interrupt
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Warning
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Buffer
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Intermediary
Correct Answer
A. Interrupt -
- 6.
Jim is given the following task: Place the numbers from 1 to 9 inclusive in the grid below, with one number in each square so that the total of every row, column, and diagonal is 15. Do not repeat any numbers, use all numbers given. Jim completes the task correctly, what is the sum of the numbers in the four corners?
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20
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15
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16
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22
Correct Answer
A. 20 -
- 7.
Mark is creating an art piece using the new 3D printer he bought. The model he is printing requires attention to detail and should be rigid but does not need to be very durable or temperature resistant. Which of the following materials would be most appropriate to print with?
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PLA
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ABS
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Metal
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TPU
Correct Answer
A. PLA -
- 8.
Tracy is a turtle who can draw different patterns using Python Language. penup() - This command can tell Tracy to not to leave a trace behind while moving pendown() - This command can tell Tracy to leave the trace behind while moving What letter it will draw using the following code
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A
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I
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T
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P
Correct Answer
A. T -
- 9.
In the diagram, what is the sum of the marked angles?
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240
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540
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360
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720
Correct Answer
A. 360 -
- 10.
A box contains a collection of triangular and square tiles. There are 25 tiles in the box, containing 84 edges total. How many square tiles are there in the box?
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12
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9
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11
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10
Correct Answer
A. 9 -
- 11.
If a, b and a - b all have positive values, which option has the smallest value
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B2 / a2
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B / a
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A / b
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A2 / b2
Correct Answer
A. B2 / a2 -
- 12.
Kenny is learning the functions of different parts of the CPU (Central Processing Unit). Which of the following parts of the CPU would handle the following instruction and what would it return? Instruction: 123>321
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ALU, Returned value: False
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IAS, Returned value: True
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IAS, Returned value: False
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ALU, Returned value: True
Correct Answer
A. ALU, Returned value: False -
- 13.
What is the total energy of an object that has a mass of 14kg?
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1.26 x 1019
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1.26 x 1018
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1.27 x 1019
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1.27 x 1018
Correct Answer
A. 1.26 x 1018 -
- 14.
What is the volume of this pyramid where s = side length of the hexagon and h = height of the pyramid?
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V = (((√ 3)/4)s2 ) x 6 x h)/3
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V = (((√ 3)/4)s2 ) x 6 x h)
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V = (((√ 3) ) x 6 x h)/3
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V = (((√ 3))s2 ) x 6 x h)/3
Correct Answer
A. V = (((√ 3)/4)s2 ) x 6 x h)/3 -
- 15.
What type of reaction is making chemical bonds?
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Exothermic
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Endothermic
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Combustion
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Equilibrium
Correct Answer
A. Exothermic -
- 16.
Joseph is an interior designer. He has just finished designing a bedroom for a customer. He would now like to render a 3D version of it so that he can show it to his customer before approving the model. Which of the following processors would be best suited to handle this operation?
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A single-core CPU with high clock speed
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A quad-core CPU with low clock speed
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A dual-core CPU with high clock speed
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A dual-core CPU that can be overclocked
Correct Answer
A. A quad-core CPU with low clock speed -
- 17.
Three unit squares and two line segments connecting two pairs of vertices are shown. What is the area of triangle ABC?
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1/6
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1/3
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1/5
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2/9
Correct Answer
A. 1/5 -
- 18.
Reuben is testing an algorithm for a program that takes in a set of characters, processes them and outputs their ASCII values along with a sum of their ASCII values. Which of the following consists of "normal" test data that would NOT create an error for this algorithm?
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9*73&&23
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ABBjsjTDl
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!@@@$nS
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All of the above
Correct Answer
A. 9*73&&23 -
- 19.
A = 99999 b = 0 REPEAT INPUT Number IF Number < a THEN a = Number b=b+1 UNTIL b=10 PRINT a What does the above algorithm do?
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Inputs 10 numbers and outputs the smallest
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Inputs 10 numbers and outputs the biggest
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Inputs 10 numbers and outputs every number that is smaller than 99999
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Inputs 10 numbers and outputs their total
Correct Answer
A. Inputs 10 numbers and outputs the smallest -
- 20.
The triangle T has sides of length 12, 10 and 10. The triangle U has sides of length 16, 10 and 10. What is the ratio of the area of T to U.
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3 : 4
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4 : 3
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1 : 1
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9 : 16
Correct Answer
A. 1 : 1 -
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Jun 26, 2020Quiz Edited by
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