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WorksheetsIntroduction to Bathroom and Kitchen Air Conditioning
Total questions: 52
Worksheet time: 26mins
Why do bathrooms and kitchens need special air systems?
They stay dry and clean always
They are used for sleeping only
They are quiet and sunny rooms
They have high humidity and smells
Which is a problem in these rooms that air must remove?
Dry desert wind
Fresh flower air
Cold clean snow
Steam and greasy air
You notice a kitchen smells bad after cooking. What should the air system do first?
Make lights brighter
Add more sweet perfume
Close all doors tightly
Pull dirty air out quickly
Which place often has a lot of wet air called humidity?
Bedrooms with closed doors
Bathrooms with showers running
Garages with parked cars
Living rooms with rugs
What can grow in bathrooms when it stays wet for a long time?
Shiny clean metals
Dry dust and sand
Mold and bacteria patches
Fresh flowers quickly
Why do kitchens need strong fans when cooking?
They get hot with steam
They are very quiet places
They are always cold rooms
They have no windows ever
What sticky stuff can float in the air from cooking?
Ice and snow
Paper and cloth
Rocks and soil
Grease and vapors
If a stove burns gas, what might the air have that we must move out?
Combustion gases
Colorful balloons
Sweet candy smell
Soft pillow fluff
What is positive pressure in a room?
More air goes in than goes out
Only hot air moves in
More air goes out than goes in
No air moves in or out
What is negative pressure in a room?
Only cold air enters the room
More air is pushed inside the room
Air stays the same all the time
More air is pulled out of the room
What is neutral pressure?
Air rushes out very fast
Only fresh air comes in
Air in equals air out
Air is blocked by doors
Why do bathrooms use negative pressure?
To bring garden air into bedrooms
To make floors warmer for feet
To keep smells from spreading to rooms
To make lights shine brighter
Which choice shows what negative pressure does in a bathroom?
Sends more air from outside
Stops any air from moving
Pushes smells into the hallway
Pulls dirty air to the outside
If a bathroom had positive pressure, what might happen?
Smells could move into nearby rooms
All noises would become quieter
Tiles would change their colors
Water would run faster from taps
What helps pull air out of a bathroom to make it safer to breathe?
An exhaust fan that moves air outside
A heater that keeps air inside
A ceiling light that shines bright
A window sticker that looks pretty
Which rule keeps bathroom air from coming back inside after it is taken out?
Turn off the fan after two minutes
Do not recirculate the extracted air
Blow the same air back into room
Close all door gaps very tightly
Air leaves the bathroom with a fan. Where should new air come from to balance it?
From nearby rooms through small gaps
From the same duct back into room
Only from the roof through pipes
From sealed walls with no openings
Why do kitchens use negative pressure?
To keep vapors and grease inside
To push smells into hallways
To make cooking stoves louder
To pull fresh flowers indoors
What helps catch cooking smoke above the stove?
A kitchen hood over the stove
A tablecloth on the table
A floor mat near the sink
A window curtain by the door
Which tool moves dirty air outside the building?
Water pipes for sinks
Refrigerator drawers
Wooden kitchen shelves
External discharge ducts
What do powerful exhaust fans do in a kitchen?
They wash dirty dishes
They heat soup faster
They add cooking smells
They pull smoky air away
Which choice shows good kitchen air control working together?
Basket, fruit, flower vase
Hood, exhaust fan, outside duct
Spoon, plate, napkin holder
Chair, rug, wall calendar
What does make-up air do in a building?
It replaces air taken out by fans
It makes doors heavier to open
It cools rooms without moving air
It blocks air from entering rooms
What can happen if there is not enough make-up air?
Floors may feel extra bouncy
Lights may turn brighter suddenly
Doors may be hard to open
Windows may become colorful
When air is not replaced, how does the exhaust fan work?
It works less well at pulling air
It becomes louder but stronger
It makes rooms smell like flowers
It heats rooms very quickly
If a kitchen has strong exhaust but no make-up air, where might air come from?
It may appear from nowhere
It may come from bright light
It may be pulled from other rooms
It may arrive from painted walls
Which is a common design mistake in ventilation?
Adding both exhaust and make-up
Using cooling only without exhaust
Checking doors open easily
Keeping rooms gently balanced
A builder wants doors to open easily and fresh air to flow. What should they plan to include?
Make-up air with exhaust fans
Only a big cooling machine
Colorful vents without fans
Closed windows all the time
What does negative pressure help do in a room?
Keep smells from spreading out
Make rooms feel warmer
Make fans spin without power
Stop all outside air forever
In a kitchen, where should the hood be placed to catch hot air and smoke?
Behind the dining room chair
Above the cooking heat source
Next to the refrigerator door
Under the kitchen floor tiles
A kitchen needs make‑up air. Why is this added?
To replace air that is exhausted
To cool only the floor tiles
To paint the walls bright colors
To clean dishes automatically
Where should a bathroom exhaust grille be placed to remove moisture and smells best?
Inside a closed cabinet
High on the bedroom wall
Far away in the hallway
Near the toilet or shower area
What does ACH stand for in ventilation calculations?
Active Chambers for Heat
Air Cooling per House
Average Circulation of Hall
Air Changes per Hour
Which bathroom usually needs a higher ACH range?
Private bathrooms
Public bathrooms
Home bedrooms
Office lobbies
A private bathroom can use a fixed flow rate close to which value?
120 L/s
5 L/s
25 L/s
75 L/s
Public bathrooms may use a fixed flow rate in which range?
15–20 L/s
35–50 L/s
5–10 L/s
80–120 L/s
Residential kitchens often target how many air changes per hour?
15–20 times
5–7 times
2–4 times
30–40 times
Commercial kitchen ventilation is commonly designed using what concept?
Floor tiles and sink shape
Room color and wall paint
Window count and curtain type
Hood size and capture velocity
Which symbol means the amount of air flow per minute?
A means air flow amount
ACH means air flow amount
V means air flow amount
Q means air flow amount
Room volume V is found by multiplying which three sizes?
area, force, time
length, width, height
width, area, length
speed, time, mass
ACH tells us what about the room air?
air changes each hour
air pressure each day
air mass each week
air colors each month
For a kitchen hood, which equation gives air flow Q?
Q equals A times Vk
Q equals p times v
Q equals f times L
Q equals V times ACH
In the Darcy–Weisbach idea, which factor helps find pressure drop Δρ?
friction factor f
room color blue
fan sound loud
food taste sweet
A hood has area A = 2 m² and face velocity Vk = 3 m/s. What is Q?
6 cubic meters per second
5 cubic meters per second
3 cubic meters per second
2 cubic meters per second
What does the 10% rule in bathroom ventilation say?
Exhaust air should be 10–15% more than supply
Supply air should be exactly equal to exhaust
Exhaust air should be 10–15% less than supply
Supply air should be 10–15% more than exhaust
Where should an exhaust fan be placed in a bathroom for best airflow?
Far from the door so air moves across
Close to the supply air vent
In the middle with no walls nearby
Right next to the door opening
Why do public bathrooms use occupancy sensors with timers for fans?
To turn fans on when people enter
To make fans run all night long
To cool the building in winter
To replace the need for any exhaust
Air should travel which path before it is exhausted from a bathroom?
From outside straight to the fan
Directly from door to outside
Across the room before reaching the fan
Only around the ceiling area
What do bathrooms and kitchens need most to keep air clean?
Closed windows always
More thick doors
Strong ventilation fans
Extra cooling machines
Negative pressure in a bathroom helps by doing what?
Pulling dirty air out
Making rooms hotter
Stopping fans completely
Pushing dust inside
Which choice shows good practice to avoid spreading smells and germs?
Use cooling instead of fans
Close all vents tightly
Blow used air into rooms
Do not recirculate dirty air
A correct ventilation design helps people by improving what?
Only window size
Air quality and comfort
Only floor strength
Only wall colors
