This document defines and describes different weather elements: - Temperature is measured in degrees Celsius and indicates hotness or coldness. - Precipitation includes rain, drizzle, snow and hail, which are measured using a rain gauge. - Clouds come in types like cirrus, stratus and cumulus, and indicate the likelihood of rain. Cloud observations are made visually. - Wind is air moving quickly, classified by speed on the Beaufort scale from calm to gale. A wind vane is used to detect wind direction.

1. Primary 5 / Unit 1: Weather & Climate PART I: Weather Forecast Appendix_4A
TEMPERATURE
What is it? Instrument Scale
* Temperature is the level of
hotness or the amount of heat
and cold
* Thermometers * Degrees Centigrade or Degrees
Celsius (0 degrees is freezing
and 100 degrees is boiling).
Eusko Jaurlaritza. Hezkuntza Saila. Ingelesa Edukien Bitartez. LMHko 5. maila. 2005-06 ikasturtea.

2. Primary 5 / Unit 1: Weather & Climate PART I: Weather Forecast Appendix_4A
PRECIPITATION
What is it? Types of Precipitation Instrument
* The amount of water falling
from the sky in liquid or solid
form.
• Rain: water falling from the
sky.
• Drizzle: light rain.
• Showers: short period of rain.
• Hail: small pieces of ice that
fall during a storm
• Snow: It’s white and soft. It
falls from the sky when the
weather is very cold.
* Rain gauge
Eusko Jaurlaritza. Hezkuntza Saila. Ingelesa Edukien Bitartez. LMHko 5. maila. 2005-06 ikasturtea.

3. Primary 5 / Unit 1: Weather & Climate PART I: Weather Forecast Appendix_4A
CLOUDS
What is it? Types of Clouds Do they bring rain? Instrument
* Masses of
condensed water
• Cirrus: They float very high and they are
made of ice. They look white and feathery.
• Stratus: they float very low. Fog is a
stratus cloud at ground level. They look
like a low grey blanket.
• Cumulus: they are white and fluffy. They
usually mean fine weather. Sometimes
they look like pieces of floating cotton.
• Cumulonimbus: they are thunderstorm
clouds. They can be beautiful but
dangerous.
They don’t.
Stratus clouds bring
rain or snow.
Sometimes they
produce light rain
(drizzle).
They don’t.
They often bring
with them heavy
rain, hail and
lightning.
* Observation
Eusko Jaurlaritza. Hezkuntza Saila. Ingelesa Edukien Bitartez. LMHko 5. maila. 2005-06 ikasturtea.

4. Primary 5 / Unit 1: Weather & Climate PART I: Weather Forecast Appendix_4A
WIND
What is it?
Types of Winds
(Beaufort Scale)
What happens? Instrument
* Air moving
quickly
• Calm: no breeze.
• Gentle: light breeze.
• Moderate: medium breeze.
• Strong: strong breeze.
• Gale: A very strong wind
Smoke rises vertically.
Leaves and flags move.
Small branches move.
Big branches move.
Little branches break
off.
* Wind vane: to
know wind
direction.
Eusko Jaurlaritza. Hezkuntza Saila. Ingelesa Edukien Bitartez. LMHko 5. maila. 2005-06 ikasturtea.