CREST Science Olympiad Class 4 Previous Year Papers

Q.1

Which of the following statements hold true regarding the given plants X and Y?

1. Plant X grows in a place where there is very little rainfall, whereas plant Y grows in cold mountainous region.
2. In plant X, leaves are flat and thin whereas leaves in plant Y are broad.
3. In plant X, roots have tiny openings at their tips whereas in plant Y roots are long.
4. In plant X, leaves are modified into spines whereas in plant Y leaves are thin and needle-like.

Q.2

Consider the following statements and choose the correct option:

Statement 1: A man cuts down the trees and modifies his environment to make life comfortable. By deforestation, he clears the land for agriculture, industries and habitat.

Statement 2: Plants and animals are interdependent. The decay of dead plants and animals provides nutrition to the soil which in turn help in the growth of plants and trees.

Q.3

Choose the correct option which answers the following question:

Waterlogged places are called swamps or marshes. Marshy regions have sticky and clayey soil. Which of the following have breathing roots since air cannot reach the roots of these plants?

Q.4

Matter exists in three states. Which of the following figures shows the arrangement of particles in a solid state?

Q.5

State which of the following statements are true or false:

1. The painting uses the separation process of evaporation.
2. The separation process of winnowing is used to separate salt from water.
3. Water droplets are seen on the outer surface of a glass when cold water is poured in it. This is due to the condensation of water vapour present in the atmosphere.

Q.6

State the effect of the force in each of the following cases:

1. James blows the air from his mouth on the smoke rising up from a burning stick. 
2. When we sit on a sofa with springs, then the springs of the sofa get compressed.

Q.7

The given picture shows the fruit of a plant called cocklebur.

Choose the method by which the seeds in the fruit are dispersed:

Q.8

Name the following:

1. The brightest planet in the solar system
2. Dwarf planet
3. Red planet

Q.9

Fill in the blank:

In a banyan tree, roots grow from the branches, reach the soil and continue growing below the soil. These are called ________________ roots.

Q.10

Fill in the blank:

The digestion process starts in the mouth. From the mouth, the food reaches the stomach through the oesophagus. The stomach secretes acids and enzymes that digest food. The thick semifluid mass of partially digested food and digestive secretions that is formed in the stomach and intestine during digestion is called  _________.