Wellington's Weather Station
10 Points
numbers
Instructions
Wellington's weather station will replace its manual temperature recording system with a new digital one. In the old system, the calculations were performed manually. In the new system, they will be automated. The calculations include converting the temperature from Celsius to Fahrenheit and finding the average temperature. The new system has sensors to record temperature data in Celsius.
The Wellington weather station wants you to help them with the new system.
1. Convert the temperature from Celsius to Kelvin
The weather station has a section on its website that is specified for researchers. The researchers are interested in the temperature in Kelvin.
Kelvin is a unit used to measure temperature. It is on the same scale as Celsius but with a different starting point. Its starting point is absolute zero, which is 0K (Kelvin) or -273.15°C (Celsius).
Here is a table showing the conversion between Celsius and Kelvin:
| Celsius(°C) | Kelvin(K) |
|---|---|
| -273.15 | 0 |
| -100 | 173.15 |
| 0 | 273.15 |
| 100 | 373.15 |
The weather station wants you to implement a method that converts a temperature from Celsius to Kelvin.
Implement the Temperature#to_kelvin method that takes an argument celsius and returns the temperature in Kelvin by adding 273.15 to the given celsius value.
Temperature.new.to_kelvin(0)
# => 273.152. Round the temperature
The weather station temperature sensor is exact. It can measure the temperature to the nearest 0.0001°C. The weather station only wants to display the temperature rounded to 1 decimal place since most users are not interested in that level of precision.
The weather station wants you to implement a method that rounds the temperature to 1 decimal place.
Implement the Temperature#round method that takes an argument celsius and returns the temperature rounded to 1 decimal place.
Temperature.new.round(10.1234)
# => 10.1
Temperature.new.round(10.1567)
# => 10.23. Convert the temperature from Celsius to Fahrenheit
The weather station has a section on its website that is specified for tourists. The tourists are interested in the temperature in Fahrenheit.
Fahrenheit is a unit of temperature measurement. It has a different scale than Celsius. 0°C is 32°F, and 1 degree Celsius equals 1.8 degrees Fahrenheit.
Here is a table showing the conversion between Celsius and Fahrenheit:
| Celsius(°C) | Fahrenheit(°F) |
|---|---|
| -273.15 | -459.8 |
| -100 | -148 |
| 0 | 32 |
| 100 | 212 |
The weather station wants you to implement a method that converts temperatures from Celsius to Fahrenheit.
Implement the Temperature#to_fahrenheit method that takes an argument celsius and returns the temperature in Fahrenheit as an integer.
Temperature.new.to_fahrenheit(10)
# => 504. Get the number of missing sensors
During the installation of the temperature sensors, the maintenance workers realized some sensors were missing. Each temperature measurement unit requires four temperature sensors. The maintenance team counted how many sensors they had but needed to know how many were missing. They would like help counting how many sensors they need to buy to build another complete temperature measurement unit.
Implement the Temperature#number_missing_sensors method that takes an argument number_of_sensors and returns the number of missing sensors.
Temperature.new.number_missing_sensors(10)
# => 2Wellington's Weather Station
10 Points
numbers
Instructions
Wellington's weather station will replace its manual temperature recording system with a new digital one. In the old system, the calculations were performed manually. In the new system, they will be automated. The calculations include converting the temperature from Celsius to Fahrenheit and finding the average temperature. The new system has sensors to record temperature data in Celsius.
The Wellington weather station wants you to help them with the new system.
1. Convert the temperature from Celsius to Kelvin
The weather station has a section on its website that is specified for researchers. The researchers are interested in the temperature in Kelvin.
Kelvin is a unit used to measure temperature. It is on the same scale as Celsius but with a different starting point. Its starting point is absolute zero, which is 0K (Kelvin) or -273.15°C (Celsius).
Here is a table showing the conversion between Celsius and Kelvin:
| Celsius(°C) | Kelvin(K) |
|---|---|
| -273.15 | 0 |
| -100 | 173.15 |
| 0 | 273.15 |
| 100 | 373.15 |
The weather station wants you to implement a method that converts a temperature from Celsius to Kelvin.
Implement the Temperature#to_kelvin method that takes an argument celsius and returns the temperature in Kelvin by adding 273.15 to the given celsius value.
Temperature.new.to_kelvin(0)
# => 273.152. Round the temperature
The weather station temperature sensor is exact. It can measure the temperature to the nearest 0.0001°C. The weather station only wants to display the temperature rounded to 1 decimal place since most users are not interested in that level of precision.
The weather station wants you to implement a method that rounds the temperature to 1 decimal place.
Implement the Temperature#round method that takes an argument celsius and returns the temperature rounded to 1 decimal place.
Temperature.new.round(10.1234)
# => 10.1
Temperature.new.round(10.1567)
# => 10.23. Convert the temperature from Celsius to Fahrenheit
The weather station has a section on its website that is specified for tourists. The tourists are interested in the temperature in Fahrenheit.
Fahrenheit is a unit of temperature measurement. It has a different scale than Celsius. 0°C is 32°F, and 1 degree Celsius equals 1.8 degrees Fahrenheit.
Here is a table showing the conversion between Celsius and Fahrenheit:
| Celsius(°C) | Fahrenheit(°F) |
|---|---|
| -273.15 | -459.8 |
| -100 | -148 |
| 0 | 32 |
| 100 | 212 |
The weather station wants you to implement a method that converts temperatures from Celsius to Fahrenheit.
Implement the Temperature#to_fahrenheit method that takes an argument celsius and returns the temperature in Fahrenheit as an integer.
Temperature.new.to_fahrenheit(10)
# => 504. Get the number of missing sensors
During the installation of the temperature sensors, the maintenance workers realized some sensors were missing. Each temperature measurement unit requires four temperature sensors. The maintenance team counted how many sensors they had but needed to know how many were missing. They would like help counting how many sensors they need to buy to build another complete temperature measurement unit.
Implement the Temperature#number_missing_sensors method that takes an argument number_of_sensors and returns the number of missing sensors.
Temperature.new.number_missing_sensors(10)
# => 2