Dubai STEM Olympiad 2019-20 Round 2 | Junior Category
-
Mary builds and programs a walking robot. However, this robot is unable to balance well and falls over easily. There is likely to be an issue with its:
-
Temperature Sensor
-
Gyro Sensor
-
Colour Sensor
-
Sound Sensor
-
.
Quiz Preview
- 2.
Luke’s Mom works in a busy office. She sends an email with a file added to it. The file is:
-
An attachment
-
A signature
-
A reply
-
A text
Correct Answer
A. An attachment -
- 3.
How many lines of symmetry does a square have?
-
4
-
1
-
2
-
3
Correct Answer
A. 4 -
- 4.
Jack throws a ball into the swimming pool. He sees that it floats. What is the reason for it to float?
-
Because of the presence of air in the ball.
-
Because of the size of the ball.
-
Because of the movement of the ball.
-
Because of the shape of the ball.
Correct Answer
A. Because of the presence of air in the ball. -
- 5.
If a technician tells you that you have a faulty router in your apartment, you are likely to have difficulty accessing which of the following?
-
The internet
-
Water from a faucet
-
The fridge
-
Your television
Correct Answer
A. The internet -
- 6.
Martha is 8 years old. John is 5 years older than Martha and 3 years older than Bob. How old is Bob in months?
-
120
-
110
-
10
-
25
Correct Answer
A. 120 -
- 7.
If a wooden box is in a state of rest, this means that forces on it are:
-
Balanced
-
Unbalanced
-
Weak
-
Strong
Correct Answer
A. Balanced -
- 8.
Which is not a type of simple machine?
-
Spring
-
Pulley
-
Lever
-
Wedge
Correct Answer
A. Spring -
- 9.
What is 3/4 added to 12/48
-
1
-
0
-
15/48
-
36/48
Correct Answer
A. 1 -
- 10.
Sam wants to ensure that the length of a wall is between 90 and 120. The length should also be an even number that is a multiple of 11. The sum of the digits of this length should be 2. What should be the length of Sam's wall?
-
110
-
120
-
116
-
None of the above
Correct Answer
A. 110 -
- 11.
A flowchart shows which of the following?
-
Algorithm
-
Robots
-
Water Flow
-
None of the above
Correct Answer
A. Algorithm -
- 12.
A barcode scanner at the supermarket is a type of:
-
Simple Machine
-
Autonomous Device
-
Input Device
-
Output Device
Correct Answer
A. Input Device -
- 13.
X is the number of parallel lines in the following parallelogram. Y is the number of perpendicular lines in this shape. What is the value of X multiplied by Y.
-
0
-
1
-
2
-
3
Correct Answer
A. 0 -
- 14.
X is the sum of all interior angles in an equilateral triangle. Y is the number of lines of symmetry for an equilateral triangle. What is the value of X+Y? *Diagram not drawn to scale
-
183
-
182
-
93
-
91
Correct Answer
A. 183 -
- 15.
Which is true about the amount of work that must be done to lift a bucket using the pulley shown compared to lifting the same bucket without a pulley?
-
Less work is done when lifting with the pulley.
-
Less work is done when lifting without the pulley.
-
The same amount of work is done lifting with or without the pulley.
-
None of the above
Correct Answer
A. Less work is done when lifting with the pulley. -
- 16.
Henry uses a dog leash of length X meters. Gavin has a dog leash that is 5 times longer. Sophia wants a leash that is of equal length as Henry's and Gavin's combined. What is the length of Sophia's leash?
-
5X
-
X
-
10X
-
6X
Correct Answer
A. 6XExplanation
To find the length of Sophia's leash, we need to add the lengths of Henry's and Gavin's leashes. Since we know Gavin's leash is 5 times longer than Henry's, we can write this as:
Henry's leash: X meters
Gavin's leash: 5X meters
Sophia's leash = Henry's leash + Gavin's leash
Sophia's leash = X + 5X
Now, we can simplify the equation:
Sophia's leash = 6X
So, Sophia's leash is 6 times the length of Henry's leash. If you have a specific length for Henry's leash (in meters), you can substitute it into the equation to find the exact length of Sophia's leash.Rate this question:
-
- 17.
A machine has a load, fulcrum and force. What type of machine is it?
-
Simple Machine
-
Complex Machine
-
Compound Machine
-
Advanced Machine
Correct Answer
A. Simple Machine -
- 18.
Kenny has enough paint to cover X square cm. What is the smallest value that X should be if he only wants to paint the two smallest faces of this shape.
-
24
-
12
-
18
-
14
Correct Answer
A. 24 -
- 19.
What is the smaller angle between the hands of a clock at 10:30?
-
135
-
120
-
180
-
150
Correct Answer
A. 135 -
- 20.
Which of the following sensors could be used in a set of automatic doors.
-
Temperature Sensor
-
Gyroscopic Sensor
-
Ultrasonic Sensor
-
PH Sensor
Correct Answer
A. Ultrasonic Sensor -
Quiz Review Timeline (Updated): +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Apr 09, 2024Quiz Edited by
ProProfs Editorial Team -
Dec 24, 2019Quiz Created by
Back to top