CBSE Class 4 Science Houses Worksheet

Q1. Fill in the blanks:

Question 1. When windows and doors face each other, air moves about freely in a room, is called ____________
Answer: ventilation
In simple words: Proper airflow through facing doors and windows keeps a room fresh and airy.

Exam Tip: Remember that ventilation refers to the circulation of fresh air inside a house.

Question 2. Cement is a powder made by heating clay and ____________
Answer: limestone
In simple words: Cement is manufactured by burning a mixture of clay and limestone at high temperatures.

Exam Tip: Key ingredients for making cement are clay and limestone.

Question 3. In North America, people made ____________ by stretching animal skins over a conical frame of branches.
Answer: tepees
In simple words: Tepees are portable conical tents made with animal hides used by native people.

Exam Tip: Associate tepees with conical tents made of animal skins in North America.

Question 4. A house with a roof of straw is a ____________
Answer: thatched house
In simple words: Roofs made from dry straw, palm leaves, or reed are called thatched roofs.

Exam Tip: Houses with straw roofs are commonly found in rural areas and are known as thatched houses.

Question 5. The overcrowded parts of towns and cities in which poor people live in their temporary houses are called ____________
Answer: slums
In simple words: Slums are densely populated urban areas with substandard housing and poor living conditions.

Question 1. Circular tents made by nomads in Mongolia, Turkey and Siberia are called
(a) tepees
(b) yurts
(c) yogurts.
Answer: (b) yurts
Yurts are portable, round tents covered with skins or felt used by nomadic groups in Central Asia.
In simple words: Yurts are round tents used by nomads in regions like Mongolia and Siberia.

Exam Tip: Do not confuse yurts (round tents used in Central Asia) with tepees (conical tents).

Question 2. In hilly, forested areas people use a lot of ____________ to build houses.
(a) wood
(b) cement
(c) steel
Answer: (a) wood
Forest-rich hilly regions have abundant timber, making wood the most accessible building material.
In simple words: Wood is easily available in forests, so people in hilly areas use it for building.

Exam Tip: Connect forested areas directly with the use of wood as a primary building material.

Question 3. ____________ are laid over the foundation to make the walls of a house.
(a) stones
(b) bricks
(c) pillars
Answer: (b) bricks
Bricks bound with mortar are laid in courses over foundations to construct sturdy walls.
In simple words: Bricks are the standard building blocks used to construct walls above the foundation.

Exam Tip: Bricks are standard units used for raising house walls.

Question 4. An ____________ is a person who designs houses, offices, and so on.
(a) teacher
(b) architect
(c) engineer
Answer: (b) architect
An architect plans, draws blueprints, and designs buildings.
In simple words: An architect is a professional who creates the plan and design for buildings.

Exam Tip: Remember: Architects draw building designs, while engineers ensure structural strength.

Q3. 'True' or 'False'

Question 1. People who live in places which get flooded very often, build houses on stilts. ( )
Answer: True
In simple words: Stilts elevate houses above water levels to protect against floods.

Exam Tip: Stilt houses are specifically designed for waterlogged or flood-prone regions.

Question 2. In places where there are earthquakes people build houses with heavy material. ( )
Answer: False
In simple words: Earthquake-prone zones require lightweight materials like wood and bamboo to minimize damage.

Exam Tip: Heavy materials are dangerous during earthquakes; light materials are preferred.

Question 3. Nomads are people who move from one place to another. ( )
Answer: True
In simple words: Nomads do not have permanent homes and travel constantly in search of food or pasture.

Exam Tip: Nomads are defined by their wandering lifestyle and lack of permanent settlement.

Question 4. Brick is a mixture of cement, chips of stone and water. ( )
Answer: False
In simple words: A mixture of cement, stone chips, sand, and water is called concrete, not brick. Bricks are made of baked clay.

Exam Tip: Do not confuse bricks with concrete; concrete contains cement, stone chips, and water.

Q4. Give reason : -

Question 1. People build houses with slanting roofs in places which snows or rains a lot.
Answer: Slanting roofs allow rainwater and snow to slide off easily, preventing water accumulation and damage to the roof structure.
In simple words: Sloping roofs let snow and rain slip off quickly so they do not pile up and break the roof.

Exam Tip: Always mention that slanting roofs prevent accumulation of snow or heavy rain.

Q5. Name the following : -

Question 1. [Image showing Tepees]
Answer: Tepees
In simple words: Conical tents made of animal skins.

Exam Tip: Recognize tepees by their conical shape and wooden support poles.

Question 2. [Image showing Yurts]
Answer: Yurts
In simple words: Circular portable tents used by nomads.

Exam Tip: Yurts are recognized by their circular tent structure with a domed roof.

Question 3. [Image showing Stilt House]
Answer: House on stilts
In simple words: Houses raised high on wooden pillars above water or wet ground.

Exam Tip: Look for supporting pillars (stilts) underneath the house platform.

Question 4. [Image showing Slum / Slum Area]
Answer: Slum
In simple words: Overcrowded urban settlement with makeshift temporary houses.

Exam Tip: Identify slums by densely packed, small temporary shelters in urban areas.