Science Olympiad Model Test Paper - 2 | Science Olympiad for Class 3 PDF Download

Ans: (c)
Observe the pattern in each segment.

Ans: (b)
1,4,3,2 is the correct logical order.

Ans: (a)

• To solve this, let's break it down:
• If the day after tomorrow is Sunday, then tomorrow is Saturday.
• This means today is Friday.

Ans: (d)
TENTION can be formed from the letters of the given word.

Ans: (d)
8 : 10 + 25 minutes = 8 : 35 p.m.

Ans: (b)

• The relationship involves edible plant parts that are commonly used in cooking.
• Turmeric, Carrot, and Cauliflower are all edible parts of plants.
• In option (b), Sugarcane, Turnip, and Broccoli also represent edible parts of plants, maintaining the same relationship.
• Other options do not consistently represent the same type of edible parts, making (b) the correct choice.

Ans: (b)

• Food chain is a term that describes the sequence of organisms through which energy and nutrients pass as one organism eats another.
• It illustrates the interdependence of living things, showing how they rely on each other for food.
• Each link in the chain represents a different trophic level, from producers to various levels of consumers.
• Understanding the food chain helps us grasp the balance of ecosystems and the importance of each organism.

Ans: (c)
Apartments are multistoreyed buildings where many people and families live on separate floors.

Ans: (c)
The name given to the project was Social Housing Mission and was launched in 2012.

Ans: (a)

• CANAAVR unscrambles to CANVAS, which is often used to make tents, a type of temporary house.
• THU does not form any relevant word.
• PATEATRMN unscrambles to APARTMENT, which is a permanent structure.
• GBNAWUOL does not form any relevant word.

Ans: (b)

• Train represents rail transport, which is a common mode of moving people and goods on tracks.
• Boat signifies water transport, used for traveling across rivers, lakes, and oceans.
• Helicopter is an example of air transport, allowing for flight and quick travel over land and water.
• The other options do not correctly match the categories of transport as required.

Ans: (d)
The household waste is domestic waste and the waste from the industries is called the industrial waste.

Ans: (b)
We cannot survive without the basic necessities of shelter to live in, air to breathe and water to drink. Food is a necessity but burger is a luxury. 

Ans: (b)
Birds are mainly nomads. They mainly build nests to lay eggs. Once the babies develop wings to fly, the birds leave the nest and move over to some new place.

Ans: (c)
Koel bird does not make its own nest. It lays eggs in a crow’s nest. As the two eggs are similar, the crow takes care of the eggs till the baby koels hatch out of it.

Ans: (c)

• Chirping of birds is often associated with nature and tranquility, making it a pleasant sound.
• In contrast, the sound made by crackers can be loud and startling.
• Honking of vehicles is usually disruptive and annoying.
• Screaming or yelling is generally considered unpleasant and alarming.

Ans: (c)
A houseboat is a big boat which has been turned into a house by making some rooms. The houseboats in Kashmir are tied to a place on the lake and the tourists reach the houseboat using a special type of boat called ‘shikara’ The houseboats in Kerala are floating houses.

Ans: (b)

• Venus is known as the brightest planet in our Solar System due to its thick atmosphere that reflects sunlight effectively.
• It is often referred to as the "Evening Star" or "Morning Star" because it is visible shortly after sunset or before sunrise.
• Other planets like Saturn, Mars, and Jupiter do not reflect as much light as Venus does.
• This brightness is a result of its proximity to the Sun and its reflective cloud cover.

Ans: (d)
The sections in a hive are hexagon and bees make honey in the hive using the nectar of flowers.

Ans: (c)

• Drying of wet clothes does not need water; instead, it involves letting clothes air out or using heat.
• In contrast, Bathing, Cooking, and Washing clothes all require water to perform those tasks.
• Thus, the correct answer is (c) because it is the only activity listed that does not involve using water.

Ans: (d)
The mud walls prevent the heat of the desert from entering the house. This keeps the house cooler than the heat outside. 

Ans: (b)
Cities have more population than the housing facilities. So, the concept of multi-storeyed buildings and apartments was born here.

Ans: (b)

• Pongal is a traditional harvest festival celebrated mainly in Tamil Nadu, India.
• This festival marks the end of the harvest season and is dedicated to the Sun God.
• People prepare special dishes, especially rice, to offer during this time.
• Other options like Gandhi Jayanti, Dussehra, and Gurpurab do not focus on harvest themes.

Ans: (d)
Houses can be classified on the basis of shape as square, circular, etc. On the basis of material used, the houses can be classified as kuchcha and pucca etc. On the basis of climatic conditions, the houses are classified as mud house, stone house, stone and bamboo house, stilted house, sloping house, etc.

Ans: (a)
The tents can be folded and packed to carry it to the next point in climbing.

Ans: (a)
Pucca houses are made up of brick, glass, iron and cement as the main components.

Ans: (a)

• The question asks for a pair consisting of a shrub and a climber.
• Jasmine is a shrub, while Pea is a climbing plant, making option (a) the correct choice.
• Other options do not correctly match a shrub with a climber.

Ans: (a)
Eskimos live in igloos.

Ans: (d)
The houses with sloping roofs are found in areas of heavy rainfall and snowfall. These roofs allow the water and snow to slope down easily.

Ans: (d)

• Cycle rickshaw is a type of vehicle that is powered by human effort, typically pedaled by a driver.
• It has three wheels, making it distinct from other forms of transport.
• Unlike an autorickshaw, which is motorized, the cycle rickshaw relies solely on manpower.
• This makes it an eco-friendly option for short-distance travel.

Ans: (b)
Crow builds its nest on the top portion of the tree to keep it safe from low to medium height animals from eating its eggs.

Ans: (c)
The blocks of snow and ice trap the inside heat and prevent it from escaping outside. This makes the temperature inside the igloo warmer as compared to the temperature outside the igloo.

Ans: (d)
The crow uses only plant materials to make its nest. Wires are human-made while roots, woods and grass pieces are plant material.

Ans: (a)
The houses in Himachal Pradesh are made with slopy roofs and they stand on strong bamboos at a raised level.

Ans: (a)
Tailor birds and weaver birds weave attractive houses to attract the female birds of their species.