CH 2 GLOBE LATITUDES AND LONGITUDES

minus 273 degrees CelsiusAt zero kelvin (minus 273 degrees Celsius) the particles stop moving and all disorder disappears. Thus, nothing can be colder than absolute zero on the Kelvin scale

physicist Guillaume AmontonsAs long ago as the 17th century, the French physicist Guillaume Amontons noted the existence of absolute zero. Since temperature is defined by the thermal motion of a substance, there is a lower limit.

Celsius is a relative scale. The temperature at which water freezes is defined as 0 °C. The temperature at which water boils is defined as 100 °C.

Temperature °C What might be at this temperature How it feels -30 (that is 30 degrees below zero) Ice, freezer Very cold if you are outside in this temperature, unbearable to most -10 Ice Very cold still but bearable if in lots of warm clothes 0 Water freezes, ice melts Cold 4 Fridge Cold

“One degree” is correct, as is “zero degrees”.

At 0°C, water exists in the solid-state. The freezing point of water is 0 °C. The liquid form of water starts to become solid (ice) at this temperature

Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy, or thermal motion. There’s a catch, though: absolute zero is impossible to reach.

Celsius, also called centigrade, scale based on 0° for the freezing point of water and 100° for the boiling point of water.

uncountable noun. Zero is a temperature of 0°. It is freezing point on the Centigrade and Celsius scales, and 32° below freezing point on the Fahrenheit scale. It’s a sunny late winter day, just a few degrees above zero. That night the mercury fell to thirty degrees below zero.

Longitudes are, therefore, imaginary circles that intersect the North and South Poles and the Equator. Half of a longitudinal circle is known as a Meridian. Meridians are perpendicular to every latitude. Unlike, latitudes, there is no obvious central longitude.