Dubai Stem Olympiad 2019-20 Round 1 | Junior Category

1. If you roll a ball along the floor, it will eventually stop rolling. What is the name of the force that causes this?

Gravitational Force

Friction

Electromagnetic Force

None of the above

2. A WHILE loop in an algorithm is an example of:

Repetition

Selection

Sequence

None of the above

3. Which of the following is the greatest for this shape?

Number of vertices

Number of edges

Number of faces

They are all the same value

4. Which of the following contains the correct sequence to draw a rectangle?

Draw a 4cm line, draw a 2cm line, draw a 4cm line, draw a 2cm line

None of the above

5. The robot is trying to get to the finish line, he can take several possible routes on the map. The routes are repersented by the letters a,b,c,d. a represents moving 1 square to the right, b represents moving 1 square to the left, c represents moving one square up, d represents moving one square down. For example, the route aaaaaad will get the robot one square above the finish, which route below will get the robot to the finish line?

Addaaaaa

Ddaaacaa

Ddaccaa

None of the above

6. If one line is a perpendicular bisector of another line, what is the angle between the two lines?

360

90

180

It can be any angle between 1 and 360

7. What is 9213/18426 simplified?

1/2

1/3

2/3

47/82

8. How many vertices or points are there on a pentagram?

4

6

5

7

9. What fraction of the shape below is shaded

1/4

3/8

2/11

1/3

10. What is the distance from the center of the circle to its edge called?

Radius

Center length

Scalar

None of the above

11. If the clock shown below is 45 minutes slow, what is the CORRECT time after half an hour?

18:00

17:00

18:30

19:00

12. Which of the following is False?

A variable stays constant throughout the entire code and never changes

You can have multiple variables in one piece of code

Information assigned to a variable is stored in the computer's memory

Variables can store text or numbers if needed

13. Which of the following is NOT an input device?

Printer

Keyboard

Touchpad

Microphone

14. What is the equation of the area of this parallelogram?

(AB/2) x height

(AB+DC/3) x height

(AB+DE/2) x height

AB x height

15. Which direction does a concave shape bend?

Inwards

Outwards

Horizontally

There are no bends in the shape

16. Carol wants to cover a wall with wallpaper. An image of the wall is shown below. How many square meters of wallpaper does she need?

6.5

13

10

Not enough information

17. What type of device is a temperature sensor?

Output Device

Input Device

Simple Machine

Lever

18. By how much is 27/56 greater than 12/28?

3/56

39/56

17/56

5/28

19. What is the total value of all the interior angles in any quadrilateral?

360

180

90

It depends on which quadrilateral

20. A job requires 100 hours of work. If Jenny does half the work this week and Sam does half of the rest of the job next week, how many more hours of work is left over.

25

50

0

75

Dubai STEM Olympiad 2019-20 Round 1 | Junior Category

1. If you roll a ball along the floor, it will eventually stop rolling. What is the name of the force that causes this?

2.

What first name or nickname would you like us to use?

2. A WHILE loop in an algorithm is an example of:

3. Which of the following is the greatest for this shape?

4. Which of the following contains the correct sequence to draw a rectangle?

6. If one line is a perpendicular bisector of another line, what is the angle between the two lines?

7. What is 9213/18426 simplified?

8. How many vertices or points are there on a pentagram?

9. What fraction of the shape below is shaded

10. What is the distance from the center of the circle to its edge called?

11. If the clock shown below is 45 minutes slow, what is the CORRECT time after half an hour?

12. Which of the following is False?

13. Which of the following is NOT an input device?

14. What is the equation of the area of this parallelogram?

15. Which direction does a concave shape bend?

16. Carol wants to cover a wall with wallpaper. An image of the wall is shown below. How many square meters of wallpaper does she need?

17. What type of device is a temperature sensor?

18. By how much is 27/56 greater than 12/28?

19. What is the total value of all the interior angles in any quadrilateral?

20. A job requires 100 hours of work. If Jenny does half the work this week and Sam does half of the rest of the job next week, how many more hours of work is left over.