Showing posts with label science-quest. Show all posts
Showing posts with label science-quest. Show all posts

Sunday, 4 December 2016

CBSE Class 9 - Science - Work Power and Energy (ENERGY TRANSFORMATIONS) - Worksheet

ENERGY TRANSFORMATIONS

CBSE Class 9 - Science - Work Power and Energy (ENERGY TRANSFORMATIONS) - Worksheet


Worksheet

Give examples for the following scenarios of energy transformations. You may choose the answer(s) from the following list of words

solar cell, turbine, mixer, fan, steam engine, automobiles, green plants, nuclear reactor, electric bulb, torch, electric bulb, microphone, loudspeaker, geyser, heater, car battery, inverter, LPG


SNo.    Energy Transformation
From ⟶ To
     Give Example
1. Mechanical ⟶ Electrical          _________
2. Electrical ⟶ Mechanical      _________
3. Electrical ⟶ Heat      _________
4. Heat ⟶ Mechanical      _________
5. Electrical ⟶ Light      _________
6. Electrical ⟶ Sound      _________

Monday, 26 December 2011

Explore Biodigital Human Body in 3D

The website BioDigitalHuman provides an interactive 3D Human body and anatomical systems views.
To view the website you need a browser supports HTML5 and WebGL. Chrome supports these. I think you need to install plugins in Firefox and IE9+. You need a broadband connection to view the site. No doubt it has been the award winning site.
You may watch the introduction video.

Attributions: BioDigitalHuman

Wednesday, 16 November 2011

Why do people, having skin problems, are advised not to wear violet or red clothes?

Q: Why do people, having skin problems, are advised not to wear violet clothes?

Answer: Violet  rays coming from the sun carry high energy. Once such radiation falls on the thin skin, it reacts immediately. It may aggravates the skin problem or might produce other side effects.

Sunday, 2 October 2011

Why do people often wake up just before the alarm?

Scientists believe that a person wakes at the same time every day because of the body’s internal “body clock” . It controls and co-ordinates the cyclic processes of the body over a twenty-four-hour period The body clock cycle or rhythms are important in determining the sleep patterns of people.

Waking before the clock rings is also thought to be part of our sub-conscious mind. It is assumed that the subconscious mind awakes the mind and the body.