CREST Science Olympiad Class 5 Previous Year Paper

Q.1

Samarth kept a bottle filled with water in the freezer. After a few hours, he was thirsty and he took out the bottle to drink water. He found that water has changed into ice (Process 1). He left aside the bottle and after some time, he noticed that the ice in the bottle has changed to water again (Process 2).
Identify the change that has taken place in the above two processes:

Q.2

Read the clues and identify the animal correctly:
Clue 1: I am an arboreal animal.
Clue 2: My hair and scales prevent me from slipping from the trees.
Who am I?

Q.3

Which of the following force does an archer apply to stretch the bow, while aiming at the target?

Q.4

Rita wrote three statements in her notebook:
1. Some organisms such as millipedes and centipedes, living in the soil, are harmful as they destroy roots of plants.
2. Earthworms are called farmer's friends because they feed on dead remains of plants and animals.
3. Topsoil, subsoil and parent rock are different layers of soil.
Which of the above statement(s) is/are false?

Q.5

Which of the following statements about forces are correct?
A. The further the object is from the Earth, the smaller is its mass.
B. An object with a smaller mass has a smaller gravitational force acting on it.
C. An object which is thrown upwards will eventually fall down due to the pull of gravity.
D. The amount of force needed a lift an object depends on the size of the object.

Q.6

Read the statements and select the correct ones:
i. Frogs and fishes lay their eggs on land in a safe place and take care of their babies.
ii. The eggs of frog hatch into tailed larvae called nymph.
iii. The tadpole grows and slowly changes into an adult frog.

Q.7

George listed four statements about the life cycles of animals in his Science journal:

A. All animals pass through exactly the same stages in their life cycles.
B. A life cycle shows the order of the different stages in an organism’s life.
C. The life cycle of a bird includes the egg, young and adult stages.
D. A life cycle is a sequence of stages that repeats from one generation to the next.

Which statements are correct?

Q.8

Select the activity which is different from the other three based on the types of force involved.
P - A table pushed along a floor
Q - A vehicle stops when brakes are applied
R - A stone thrown high up in the air, always comes down
S - Drilling a nail into the wall

Q.9

Consider the following statements:
Statement 1: When Emma pushes a notebook across the table, work is said to be done.
Statement 2: When Emma pulls the wall towards herself, work is said to be done.
Which one of the following is correct about the above two statements?

Q.10

Consider the following clues and identify the joint:
Clue 1: These joints are present between the tarsals in the ankles and between the carpals in the wrists.
Clue 2: In the wrist, this type of joint allows the hand to bend upward at the wrist and also to wave from side to side while the lower arm is held steady.