Do You Know
Questions & Answers on General Knowledge.
What does a satellite do?
A satellite is any body or object that moves around another; for example, the Moon is a satellite of Earth. But when most scientists use the word “satellite” they are referring to a man-made object that orbits Earth and collects and returns data. A single satellite may serve many purposes. Satellites can be used for weather forecasts by measuring clouds, winds, and the temperature of the atmosphere from space. They are also used in military contexts to track battle zones, watch for missile launches and nuclear testing, spy on countries, and track incoming objects like meteoroids. Satellites also send television programs and telephone calls from one continent to another. The first Global Positioning Satellite (GPS) was launched on November 22, 1978, and today GPS is the standard navigation tool used by the military, scientists, and industry. Space satellites are used for learning about the universe, including how the Sun and Earth interact and details about planets.
How can you demonstrate that sounds are waves produced by the vibration of material objects?
How does a rotary phone switching system distinguish between the off-hook signal and the dialing signals, one through ten?
Can we predict earthquakes?
Why do we call wealthy members of society “the upper crust”?
Suspension bridges today can't oscillate like the Tacoma Bridge, can they?
How do neon lights work?
When did the first land creatures appear?
How does a laser printer work? What is the toner made of and how does the printer place it on the paper?
Was pond ice used as the first refrigerator?
Where can you find orangutans?
How does electricity work and is it possible to design a light bulb that will let you know when it is about to stop working?
What is a hornbook?
Why do newspapers fade and yellow within a few months?
Why is a boxing ring square?
What is the difference between an ocean, a sea, a gulf, and a bay?
Why are rain forests so important to the health of our planet?
How is an MP3 player related to a computer?
What is heat energy used for?
Can you give me an example of when the angular acceleration is in a different direction from the torque applied?
What is the earliest theatre we know of?
Is a tsunami the same as a tidal wave?
How does the resonant cavity in the magnetron work?
Are fangs important to snakes?
What is sonar?
What is a black hole?
Celebration of Onam
Stress Management Tips
Precautions while using Microwaves
Benefits of Lemon
The Most Beautiful Bays
Paradise Bay Antarctica
Among Antarctica s most beautiful places this bay is surrounded by ice cliffs and is perfect for penguin sighting.