Automatic Plant Watering with Arduino

Interactive Video
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Science, Engineering
•
1st - 6th Grade
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the red LED in the automatic plant watering system?
Indicates when the soil is wet
Indicates when the pump is off
Indicates when the soil is too dry
Indicates when the system is powered on
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a MOSFET used in the circuit for the pump?
To increase the voltage supplied to the pump
To convert AC to DC for the pump
To allow the Arduino to control a device requiring more current
To decrease the current supplied to the pump
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of setting a threshold in the Arduino code?
To determine when to turn the LEDs on
To set the maximum pump speed
To calibrate the soil moisture sensor
To differentiate between wet and dry soil
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the life of the soil moisture sensor be extended?
By powering it only when taking readings
By using a higher voltage
By using a larger sensor
By keeping it powered on continuously
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What could be a potential issue if the delay time in the loop function is set too long?
The pump might not turn on at all
The sensor might not take accurate readings
The pump could overflow the plant
The LEDs might not function properly
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which command can be used to run the pump at variable speeds?
delay
serialPrint
analogWrite
digitalWrite
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be considered when setting up the physical system?
The size of the water reservoir
Protection of the Arduino from water and dirt
The color of the LEDs
The type of soil used
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