10 Facts about HEAT

1. The highest temperature ever recorded in the shade was 57.8C (136F) in Libya on September 13 1922.

2. The skin of a polar bear is black, which helps it to absorb more of the heat from the sun.

3. According to Nasa, when the temperature reaches 95F our work output drops by 45 per cent.

4. “As cool as a cucumber” is an apt simile: The inside of a cucumber can be as much as 11C (20F) cooler than the outside temperature.

5. The average temperature on Mars is -63C.

6. According to ‘Dolbear’s Law’, you can calculate the temperature in degrees Fahrenheit by counting the number of chirps produced in 14 seconds by the snowy tree cricket and adding 40.

The first use of the term “heatwave” for a period of hot weather was in New York in 1892

7. Until they are needed, the balls at Wimbledon are stored in refrigerated containers at 68F.

8. The flapping of the wings of 1,000 bees generates seven watts of heat.

9. The first use of the term “heatwave” for a period of hot weather was in New York in 1892.

10. The World Meteorological Organization’s definition of a heatwave is when temperatures are over 5C (9F) above average for five days in a row.

 

Reference: http://www.express.co.uk/fun/top10facts/415323/Top-10-facts-about-heat

Some Uses and Importance of HEAT.

– HEAT can be converted as a form of energy that helps us to do the things that we want to do.  Heat can make things hot and we can use heat to do work. We feel hot when the Sun shines. This shows that the Sun is a source of heat energy and gives out heat

 

 

---

 

 

– Plants grow because of heat. In that way, we can have foods to eat.

---

 

– Mammals can survive because of heat. (including humans)

 

 

 

 

– Heat was used to cook different dishes

---

 

– Space Heater was used to keep homes (especially on cooler places/countries) warm.

---

 

– Convection room heaters are one of the many best ways to produce quick heat

---

 

 

– Hand Dryer used heat to make our hands dry easily.

---

 

 

 

 

 

 

 

 

 

THAT’S ALL 🙂

The HEAT Song – http://www.youtube.com/watch?v=khZrs-UBq28 (c)

^ Enjoy 🙂

Specific Heat Capacity and Heat Transfer

Absolute Zero – Lowest possible temperature

Specific Heat Capacity

– is the measurable quantity that characterized the amount of heat that an object has. Heat capacity is expressed by Kelvin (K)

– 37 degrees (Normal Temperature) As the temperature approaches zero,  the specific heat capacity of an object also approaches zero.

 

 

 

 

 

---

 

Molecules inside of an heated object

HEAT TRANSFER

– The transfer of heat is normally from a high temperature object to a lower temperature object. It can be transferred through :

• CONDUCTION
• • CONVECTION
  • RADIATION
• ADVECTION

 

– See HEAT TRANSFER experiment –

http://www.youtube.com/watch?v=9NdrDkbrpN0

---

 

What is HEAT WAVE?

                                                  HEAT WAVE

– A kind of wave came from a period of hot weather caused by high humidity. It affects the climate,season,weather and temperature. A heat wave can be an extended period of days with higher than normal temperatures.

---

                         Temperature :

– related to heat,  a measure of how hot or cold an object is. It can be described as mild,warm,lukewarm,chilly,cool etc. 

– SI Unit ( Celsius, Fahrenheit, Kelvin)

– can be measured through an instrument called “thermometer”  *see picture*

---

 Characteristics of HEAT WAVE :

During daytime, you will feel hot because of the heat and radiation came from the sun. On the other hand, during nighttime
the human body should recover from the heat stress of the previous day. For non air-conditioned households,
high nighttime temperatures can be critical for health.