surprising science: 2017

Monday, 13 March 2017

Science and Technology in production of energy

Hydro Power Plant:

Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.

Sunday, 12 March 2017

Science Innovations

Source: Science Reporter

Science and Technology in Manufacturing

Silicon Rubber

Silicone rubber is an elastomer rubber-like material) composed of silicon—itself a polymer—containing silicon together with carbon, hydrogen, and oxygen. Silicone rubbers are widely used in industry, and there are multiple formulations. Silicone rubbers are often one- or two-part polymers, and may contain fillers to improve properties or reduce cost. Silicone rubber is generally non-reactive, stable, and resistant to extreme environments and temperatures from -55 °C to +300 °C while still maintaining its useful properties.

Due to these properties and its ease of manufacturing and shaping, silicone rubber can be found in a wide variety of products, including: automotive applications; cooking, baking, and food storage products; apparel such as undergarments, sportswear, and footwear; electronics; medical devices and implants; and in home repair and hardware with products such as silicone sealants

Science and Technology in agricultural field

Throughout history, scientific and technological advances have greatly impacted the agriculture industry.

1. Corn Picker

A corn picker is a machine used on farms to harvest corns stripping the stalks about one foot from the ground shooting the stalks through the header to the ground. The corn is stripped from its stalk and then moves through the header to the intake conveyer belt. From there it goes up the conveying system through a fan system, separating the remaining stalks from the ears. The stalks blow out the fan duct into the field while the ears drop onto another conveyor belt. The ears ride the belt and drop into a large moving bucket.

This method is done with both Fresh Corn and Seed corn.

The first mechanical corn harvester was developed in 1930 by Gleaner Harvester Combine Corporation of Independence, Missouri.

2. Gasoline Tractor

In 1892 John Froelich built the first gasoline-powered tractor that propelled itself backward and forward. His invention helped pave the way for modern farming.

Discrepant event 4)Sparkly volcano

Sparkly Volcano

Combine the terror of an erupting volcano with the joy of glitter to create a sparkly version of a classic science experiment.

What you'll need:

A tall vase
Baking soda
Vinegar
Red food coloring
Blue glitter
A tray to hold the mess

Pour a good helping of baking soda into the bottom of the vase. Add a healthy dose of red food coloring and toss in the glitter —the more sparkles, the better! When you're ready, pour in the vinegar and stand back. Your volcano will erupt in all its glittery glory.

It works thanks to a chemical reaction. The baking soda is a base and the vinegar is an acid, and when those two meet, look out! The glitter is just for fun.

Discrepant event 3)Pepper on the run

Pepper on the run

Send pepper running with this simple surface tension experiment.

What you'll need:

Pepper
Dish soap
A bowl of water

Pour a generous amount of pepper into the bowl of water. Most of it should float on the top. Put a drop of dish soap on your finger and touch the surface of the water. The pepper will scatter to the edges of the bowl!

This is due to surface tension — a property of water that allows it to resist outside forces. Common dish soap decreases water's surface tension, causing the water in your bowl to spread out and take the pepper with it.

Thursday, 9 March 2017

Discrepant event: 2)Rainbow in a jar

Rainbow in a Jar

Somebody tell the Double Rainbow guy that science is the key to his eternal happiness. You can make a rainbow (or two) right in your own kitchen.

What you'll need:

Large mason jar
Light corn syrup
Olive oil
Blue dish soap
Water
Food coloring (red and green)
Small mason jars (or other containers for mixing)

Prepare each layer of the rainbow in separate jars. Use equal amounts of each material (two cups of each will give you nice thick color bands).

Add red food coloring to the corn syrup
Add green food coloring to the water
Olive oil is already yellow.
The dish soap is already blue.

Pour the liquids one by one into the large mason jar in this order:

Red corn syrup
Blue dish soap
Green water
Yellow olive oil

The liquids won't mix together. Instead, you'll get separate bands of each color. This experiment works because each liquid has a different density, and certain liquids (like oil and water) refuse to mix.

Inquiry Based model- Discrepant events.

What is a Discrepant Event?

An event that amazes students because it is contrary to what they would expect to happen based on their background knowledge.

Puzzles the observer.
Arouses curiosity

1)Orange: Sink or Swim

This experiment is a great way to explain the principle of buoyancy and also to get your kids to voluntarily wash your fruit.

What you'll need:

Regular orange
Peeled orange
Deep bowl or pitcher of water

One of these oranges will sink and one will float.

Drop each orange into the water separately. While the orange with the peel is certainly heavier, it will float while the peeled orange sinks. This is because the orange rind retains air. The air bubbles give the orange a lower density than the surrounding water, causing it to float. This principle is called buoyancy.

Science And Technology in medicine

Dental equipments:

Dental health is one the areas most affected by emerging . New equipment such as advanced X-ray screenings and 3D models of teeth, dentures and implants are making complex processes and procedures a lot easier on dentists. There are also many more avenues for dentists to find the equipment like air compressors for bonding veneers. so small dental practices can saves money while still making the most of the technologies available to them.

Tuesday, 7 March 2017

Co-relation of science with geography

Unit: Some natural phenomenon

STD: VIII

While explaining about earthquakes,we can tell students about different places in India and world, where earthquakes frequently occurs and which are the different earthquake prone areas.

While explaining about lightning,we can tell about different seasons and in which season we can see the lightning in the sky.

Co-relation of science with maths

Unit: Structure of atom

STD: IX

By comparing with different geometrical shapes we can tell the students that
atom , nucleus are round in shape.
And the shells or orbits are circular in shape.

The maximum number of electrons that can be present in each shell is 2n^{2, where n is shell/orbit number. So to find out the exact number of electrons in each shell, we can make students to solve the formula}2n²by putting the value of 'n'.

Co-relation of science with crafts

Unit: Fibre to Fabric
STD: VI

In this chapter,while explaining about the weaving process, we can make students to weave paper strips in the class. Through this activity they will come to know, how yarns are arranged in fabrics and they will understand the concept better.