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Science Experiments for Class 5

Last updated date: 28th May 2024
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Learn Science the Easy Way with Science Experiments for Class 5 with Explanation

It is an undeniable fact that science is an incredible and surprising subject. From understanding the biological processes of life to exploring the natural phenomena of our planet Earth, and from the mind-bending optical illusions created by light and mirrors to the captivating experiment of a candle underwater, there is no end to the fascination that science can offer us. As a Class 5 student, you may have already experienced this sense of wonder and curiosity towards science through Science Experiments for Class 5, which has led you to explore various scientific activities and experiments.

This article has compiled a list of science experiments specifically designed for students studying in CBSE Class 5. These experiments are an excellent way to gain knowledge about scientific facts and principles and develop a deep understanding of the scientific activities involved in conducting experiments. By actively engaging in these Simple Science Experiments for Class 5 with Explanation, students can learn about the scientific method, observation, and theory testing, essential skills for any aspiring scientist.

Here are Some Science Experiments for Class with Explanation for Students

The Science Experiments for Class 5 with Explanation offer an excellent opportunity for students to dive deeper into the world of science and develop a lifelong love and appreciation for this fascinating subject. So, whether you want to enhance your knowledge of science or simply satisfy your sense of wonder and curiosity, these experiments are an excellent place to start.

Tornado in a Bottle 

By following the fun science project provided here, you can acquire the skill of creating a tornado inside a bottle. All you need are some readily available items such as empty bottles and food colouring agents. You can easily construct a miniature version of a tornado that is much safer than the ones you may see on the local weather channel.

Materials Needed: 2 empty bottles, pieces of paper, tornado tube, food colouring


  • Fill two-thirds of the water in one bottle, add food coloring or paper pieces (optional).

  • Connect both bottles with a connector, empty bottle on the bottom.

  • Place on a sturdy surface and wait for water to stop dripping down.

  • Move bottles in a circular motion for continuous flow and observe the tornado shape.


  • No tension when water is still, air pressure creates bubbles when water moves down.

  • Low water level and pressure stops water flow completely.

  • Circular motion creates centripetal force, slowing down water and forming a tunnel.

Lava Lamp Experiment

The operation of a lava lamp is based on two fundamental scientific concepts: density and polarity, which also explain why oil and water cannot mix. By conducting the lava lamp experiment outlined here, you can clearly understand how this fascinating device operates.

Materials Needed: Plastic bottle, food colouring, water, vegetable oil, Alka-seltzer or other fizz tablets.


  • Fill the bottle with ¼ water using a funnel.

  • Fill the bottle with vegetable oil until full.

  • Wait for water and oil to separate.

  • Add food colouring.

  • Observe food colouring mixing with water through oil.

  • Drop a small piece of fizz tablet for the lava lamp effect.

  • Add more tablets as needed for continuous effect.


  • Water and oil separate due to density.

  • Food colouring mixes with water due to similar density.

  • Fizz tablet releases carbon dioxide bubbles that reach the top and fall back down with added colour.

  • Adding more tablets increases reaction time for longer enjoyment of the lava lamp effect.

Anemometer Experiment 

Another of the best Science Experiments for Class 5 involves creating an anemometer using disposable cups, the Robinson Anemometer. These cups can be used for catching the wind, thus making the device spin. By counting the number of spins within a specific time frame, the wind speed can be calculated, providing insight into the speed at which the wind is moving.

Materials Needed: Paper cups (5), plastic bottle, scissors, duct tape, hole punch, wooden dowels (3), stopwatch


  • Create 4 holes on the paper cup sides and then create 4 evenly-spaced holes around the central cup rim. 

  • Next, you need to slide 2 wooden dowels through the holes in the central cup. 

  • Once that is done the dowels should be inserted into the holes of the other cups. Make sure to use some duct tape for taping them. 

  • After that, you will have to attach the bottom section of the central cup and the wooden dowel together

  • Once that is done, make sure to put the central wooden dowel into the plastic bottle.

  • Observe the anemometer to get an idea of how fast the wind is blowing, and record the speed by measuring revolutions per minute.


  • The cup anemometer made in this experiment can't display the wind speed, but it can be used to calculate the average wind speed in a week. 

  • All you have to do is record the wind speed at different times of the day.

Best Science Experiments for Class 5 with Explanation Available Right here

These Science Experiments for Class 5 with Explanation will help you understand the concepts of scientific topics in a detailed manner. Download the experiments right now and get to learning.

FAQs on Science Experiments for Class 5

1. How can these science experiments help me understand scientific concepts?

Science experiments provide you with a hands-on experience that can help them understand scientific concepts in a more tangible way. By performing experiments, one can observe and analyze the results, making it easier for one to understand complex scientific concepts.

2. What are some important safety considerations when I am performing science experiments?

Safety is crucial when performing science experiments. You should always wear appropriate personal protective equipment, such as gloves or goggles, and follow all instructions carefully. You should also be aware of potential hazards, such as hot surfaces, sharp objects, or hazardous chemicals, and take appropriate precautions to avoid injury.

3. How can students ensure that they perform Science Experiments for Class 5 properly?

Students can ensure that they perform experiments properly by carefully reading the instructions and following them step-by-step. It is also important to take accurate measurements, record observations, and analyze the data collected. Asking for help from a teacher or mentor is also a good idea if they need clarification on a particular step.