Science Projects for Class 8

Science and its applications are way beyond the textbook experiments and class activities we did as kids. But to boost the interest of students in science and help them learn the basics, these simple and interesting experiments and observation projects enable them to understand varied basic concepts of Science. Often class 8 students are asked to submit their science project by the end of the year, in which they have to choose a topic, carry out an experiment and state the conclusion of their chosen scientific principle through their science project. Read this blog to learn about the best and most interesting science projects for class 8 which can help you delve deeper into the magic of science while also getting a higher score in your science class!

Download NCERT Solutions Class 7 Science Chapter 8 Important Questions and Answers PDF

Best Science Projects for Class 8

For science projects for class 8, students are generally asked to perform an experiment, conduct an activity or design a working model which elucidates the principle that they have chosen. Thus, we will explain to you how you can perform simple experiments as well as create a working model.

Top 40 Science Models for Class 8

Here is a list of top Science Models that you can try:

• Drop an egg to prove the first law of motion
• Assemble a Newton’s cradle
• Blow out a candle with a balloon
• Relight a candle without touching it
• Measure and compare lung capacity
• Build an infinity mirror
• Brew up some root beer
• Construct a cup holder
• Assemble a spring scale
• Extract bismuth from Pepto-Bismol
• Make a solar desalinator
• Perform a starch test with iodine
• Keep your hands warm
• Explore symbiosis with nitrogen-fixing bacteria
• Crash cars for science
• Discover the center of gravity
• Power up homemade batteries
• Examine the connection between personality and memory
• Concoct and test your own shampoo
• Fuel a film canister rocket
• Stand on a pile of paper cups
• Create a rainbow of flames
• Get your laundry really clean
• Test water quality
• Fingerprint analysis
• Create a roller coaster loop
• Extract your DNA
• Separate water into hydrogen and oxygen
• Build a circuit to detect ripe produce
•  Discover the strength of interleaved paper
• Guide a growing plant through a maze
• Find out if peppermint improves reaction time
• Raise a hydraulic elevator
• Grow a carbon sugar snake
• Generate a Lichtenberg figure
• Teach a computer to play tic-tac-toe
• Cast animal tracks
• Construct a Rube Goldberg machine
• Block the sun’s UV rays
• Turn juice into spheres

Science Projects for Class 8 for Exhibitions

Here are some of the Science Projects for Class 8th Exhibitions that you can try:

Measuring Glucose in Food

The majority of the meals that we take in a day include carbohydrates or sugar. But the form in which we consume them is different and the one that is found inside the human body is different. In our body, glucose is broken down into simpler substances and you can opt for a glucose experiment for your Class 8 science project through which you can analyse the presence of carbohydrates in glucose and our food. As per your choice, collect some food items of daily life along with food dye, room temperature water, plastic glasses, knife and record your observations. You will also need glucose reading strips for this science project and create a positive strip by dipping a glucose strip into a sugar-based or glucose solution as well as a negative strip by dipping a glucose strip into the water. Then, test each of the foods you have taken with these two strips and record your observations. 

Boiling Point of Water

Water in its pure form has a specific boiling point and if we keep on adding some solutions or chemicals to water, its boiling point tends to change. For this simple and interesting science project for Class 8, you need some basic household items, i.e. sugar, salt, lemon juice, oil, oranges, jaggery, tea, etc. Ask an adult for supervision and assistance in helping you test the boiling point of water while adding a different item every time. Record your observation for these items and create your Science project accordingly. 

Red Cabbage Indicator

The red cabbage that we eat consists of a natural pH indicator that we can use to identify the nature of various substances. Since not many people are aware of this natural indicator, you can use red cabbage to create a unique Science project for Class 8. First, extract the juice of red cabbage and take some paper cups. Now, you need a specific amount of the following items in each paper cup:

• Milk
• Water
• Baking Soda
• Soda Drink
• Lemon Juice
• Vinegar

Now, pour the red cabbage juice into each cup until the colour of the liquid/powder [baking soda] changes. Note down your observations regarding the nature of acid and base in each item as indicated by the red cabbage and astonish your class with an amazing science experiment!

Potato Battery 

Do you know that the potato we use in our food can actually convert chemical energy into electrical energy? As a potato has many nutrients that act as chemicals in a particular setup, it can be used as an electrical battery and thus a unique working model for your Class 8 science project! You need a few potatoes to create your own potato battery and the process is quite simple. Take two potatoes, zinc and copper electrodes, 6 alligator clips and a small bulb/digital clock. First, insert the zinc and copper electrodes in the potatoes and then use alligator clips to attach the electrodes with the clock or bulb [adult supervision necessary].

You will see that the potatoes will charge electrodes and then the clock or the bulb will turn on automatically.

Thermal Conductivity of Metals

Amongst the most popular science projects for Class 8, you must have come across this one in day-to-day scenarios. Have you noticed that the pan in which we cook gets all heated up including the handles of it or the tong with which we cook our chapatis becomes hot? This is because of thermal conductivity in solids which means that the molecules of solids when heated up move in different directions and spread the heat. For your project, you can pick a bunch of solid items and check at which temperature the entire object gets heated up and up to which temperature.

Pinhole Camera

You must have come across various high-end cameras, but a pinhole camera is something that you can construct from simple household products. The camera does not contain any type of lens rather it is a light-proof box which has a small hole on one of its sides. Light from one side will fall into it and then by using its effort, it will reflect the picture on the other side of it.  the image formed by this lens is inverted, thus,  it becomes a tree basis of your entire project. 

Science Working Model for Class 8

Here is a list of Science Working Models for Class 8:

• Create your own Biodiesel
• Astronomical Telescope
• Wind Turbine
• Cotton Candy Machine
• Periscope
• Create a working model of the human heart
• Biogas plant
• Solar cell

Now, let’s pick up some of these and learn how to make these models:

Create your own Biodiesel

Biodiesel is made from vegetable oil and animal-fat based diesel fuel including long-chain alkyl and esters. Biodiesels are made by chemically reacting lipids, e.g., vegetable oils, animals with alcohol to produce fatty acid esters. The project is for renewable energy, physics, biology.

Astronomical Telescope

A telescope is an optical instrument to make observations to make distant objects look closer with an arrangement of lenses or curved mirrors. The rays of light are collected and focus on resulting in magnified images.

Cotton Candy Machine

A cotton candy machine follows the same framework everywhere in the world and you can make it right at home. When sugar is heated, it becomes liquid caramel. If liquid caramel is pushed through tiny holes to the outside by centrifugal force when the container continuously rotates, cotton candy is made by recrystallization.

Create a working model of the human heart

One of the most famous working models is the human heart’s working model. The project only requires a physioball, PVC Pipe cap, balloons, and drip pipe. The project will barely take an hour to complete and you will be able to impress your teacher with it.

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