Efevresi Round 1

You pour yourself a cup of black coffee, but it is too hot. You intend to add a fixed amount of cold milk to it, but you know that even after that, the coffee will need to cool down for a few minutes before you can drink it. In which case does the coffee cool down more:

• 1. Add milk right away, then wait a few minutes before drinking.

• 1.  Wait a few minutes, then add milk just before drinking.

• Both

• None of these

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

1. Which tank will fill first?

• G

• K

• F

• H

1. You are in a rowing boat on a lake. A large, heavy rock is also in the boat. You heave the rock overboard. It sinks to the bottom of the lake. What happens to the water level in the lake?

• It rises

• It decreases

• It stays the same

• None of the above

I’m a phenomenon that bends light, making objects appear displaced. What am I?

• Refraction

• Reflection

• Lateral Displacement

• Total Internal Displacement

I am small but mighty, and in the circuits, I play, I limit current in a clever way. Colourful bands adorn my side, telling you my value with pride. What am I?

• Conductor

• Diode

• Resistor

• Key

Two identical rocks are dropped in two buckets A and B, both having an equal amount of water. A has water at 25℉ and B has water at 25℃. In which bucket will the rock reach the bottom first?

• A will reach the bottom first

• B will reach the bottom first

• Both will reach at the same time

• None of the above

Tags

NGSS.MS-PS1-4

At which point will the velocity of water be the highest?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A robot is deployed in a warehouse to autonomously navigate and retrieve items from the shelves. Which sensor fusion technique would be most effective for the robot to avoid collisions with moving objects and other robots?

• Combining data from lidar and radar sensors

• Relying solely on visual camera

• Using ultrasonic sensors

• Ignoring sensor data and relying on pre-programmed paths

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

What happens if a bar magnet is broken equally into two pieces

• 1. We will have a single pole on each piece

• Each piece will have 2 unlike poles

• Each piece will have 2 like poles

• 1. None of these

How fast must the car go downhill, in order for its speed to reach an average of 30mph for the entire journey?

• 15mph

• 30mph

• 45mph

• None of these

Tags

NGSS.MS-PS3-1