List of top Science Questions asked in CBSE Class IX

Name the regions in which parenchyma tissue is present.
What are the various energy transformations that occur when you are riding a bicycle?
In the following example, try to identify the number of times the velocity of the ball changes: “A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”. Also identify the agent supplying the force in each case.
The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?
A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal, what is the work done on the object by the gravitational force? Explain your answer.
Identify the type of tissue in the following:
skin, bark of tree, bone, lining of kidney tubule, vascular bundle.
A battery lights a bulb. Describe the energy changes involved in the process.
Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five-rupees coin and a one-rupee coin?
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
Draw a labelled diagram of a neuron.
Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.
What is the specific function of the cardiac muscle?
Which characteristic of the sound helps you to identify your friend by his voice while sitting with others in a dark room?.
What are the functions of the stomata?
Why is sound wave called a longitudinal wave?
Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound.
What is sound and how is it produced?
For increasing production, what is common in poultry, fisheries and bee-keeping?
What are the benefits of cattle farming?
What are the advantages of inter-cropping and crop rotation?
How do storage grain losses occur?
Why are manure and fertilizers used in fields?
Explain any one method of crop production which ensures high yield.
Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.
How are simple tissues different from complex tissues in plants?