Life Science Experiments For Children
Introduction to life science experiments for children:
Now days, there are a lot of life science experiments for children, through which the entire process of learning life science becomes fun loving and extremely interesting. By carrying out small life science experiments for children, it gives a practical outlook and helps the children to grasp the topic quickly and in an easy manner. Here are some examples of life science experiments for children -
Experiment for children on Life Science Number 1
Title: Effects of oil spills on aqueous plants.
Objective: To see how oil spills negatively affect the growth rate and photosynthetic rate in aqueous plants.
Materials required for the experiment: Two test tubes, two twigs of Milfoil weeds, a graduated cylinder, oil, a large beaker and a weighing machine.
Method of preparation: Weigh the two twigs individually and record it appropriately. Put each of them in a test tube and fill it with water. Using a graduated cylinder, find the volume of the water inside the test tubes and record it appropriately. In one of the test tubes pour some oil over water. Then take the beaker filled with water and turn the test tubes upside down inside the beaker, allowing no exchange of water from the surroundings. Let it settle for atleast 6 to 8 hours. Then remove the test tubes and record the new volume of water and the new found weight of the twigs.
Result: The plant with no oil cover had a constant photosynthetic rate per gram and a constant percent change in weight. While the plant with oil spill cover, had a very dwindling photosynthetic rate over the time and there was no change or negative result as in case of weight change.
Conclusion: This life science experiment proves that aqueous plants with oil cover refrain to progress in areas such as photosynthesis and growth, and not only because of the reduced amount of sunlight, but also because the carbon dioxide that the plants need for photosynthesis is not being able to distribute and diffuse in water. Reducing the photosynthesis rate, the plants, therefore use sugar from their cells to compensate for the sugars required for growth and metabolism.
Experiment for children on Life Science Number 2
Title: Requirement of oxygen for survival.
Objective: To see if life can survive without oxygen.
Materials required for the experiment: Five glass jars with corks to tighten the necks and five insects or butterflies.
Method of preparation:
Part A- Take two jars and place a butterfly in each of the jars. Cover the necks of the jars with corks. Use a needle to make some holes on one cork for inflow and outflow of air. Leave the set up for one hour and then observe.
Part B- Now take the other three jars and place a butterfly in each of the jars. Fill one of the jars with carbon dioxide, one with nitrogen and the other with oxygen. Leave aside the set up for an hour and then observe.
Result: Part A- You will see that the butterfly in the jar with a no-hole-cork dies and the butterfly in the other jar whose cork had holes is still alive, since there was a constant inflow and outflow of oxygen contained air.
Result: Part B- You will see that the butterfly in the carbon dioxide filled jar dies immediately and the one in nitrogen filled jar also dies gradually. But the butterfly in the oxygen filled jar lives and does not die.
Conclusion: This life science experiment proves that oxygen is required to live and out of all gasses present in air, oxygen is the life supporting gas.
Now days, there are a lot of life science experiments for children, through which the entire process of learning life science becomes fun loving and extremely interesting. By carrying out small life science experiments for children, it gives a practical outlook and helps the children to grasp the topic quickly and in an easy manner. Here are some examples of life science experiments for children -
Experiment for children on Life Science Number 1
Title: Effects of oil spills on aqueous plants.
Objective: To see how oil spills negatively affect the growth rate and photosynthetic rate in aqueous plants.
Materials required for the experiment: Two test tubes, two twigs of Milfoil weeds, a graduated cylinder, oil, a large beaker and a weighing machine.
Method of preparation: Weigh the two twigs individually and record it appropriately. Put each of them in a test tube and fill it with water. Using a graduated cylinder, find the volume of the water inside the test tubes and record it appropriately. In one of the test tubes pour some oil over water. Then take the beaker filled with water and turn the test tubes upside down inside the beaker, allowing no exchange of water from the surroundings. Let it settle for atleast 6 to 8 hours. Then remove the test tubes and record the new volume of water and the new found weight of the twigs.
Result: The plant with no oil cover had a constant photosynthetic rate per gram and a constant percent change in weight. While the plant with oil spill cover, had a very dwindling photosynthetic rate over the time and there was no change or negative result as in case of weight change.
Conclusion: This life science experiment proves that aqueous plants with oil cover refrain to progress in areas such as photosynthesis and growth, and not only because of the reduced amount of sunlight, but also because the carbon dioxide that the plants need for photosynthesis is not being able to distribute and diffuse in water. Reducing the photosynthesis rate, the plants, therefore use sugar from their cells to compensate for the sugars required for growth and metabolism.
Experiment for children on Life Science Number 2
Title: Requirement of oxygen for survival.
Objective: To see if life can survive without oxygen.
Materials required for the experiment: Five glass jars with corks to tighten the necks and five insects or butterflies.
Method of preparation:
Part A- Take two jars and place a butterfly in each of the jars. Cover the necks of the jars with corks. Use a needle to make some holes on one cork for inflow and outflow of air. Leave the set up for one hour and then observe.
Part B- Now take the other three jars and place a butterfly in each of the jars. Fill one of the jars with carbon dioxide, one with nitrogen and the other with oxygen. Leave aside the set up for an hour and then observe.
Result: Part A- You will see that the butterfly in the jar with a no-hole-cork dies and the butterfly in the other jar whose cork had holes is still alive, since there was a constant inflow and outflow of oxygen contained air.
Result: Part B- You will see that the butterfly in the carbon dioxide filled jar dies immediately and the one in nitrogen filled jar also dies gradually. But the butterfly in the oxygen filled jar lives and does not die.
Conclusion: This life science experiment proves that oxygen is required to live and out of all gasses present in air, oxygen is the life supporting gas.
