Review - What is Weather?

• The weather describes the air outside today.

• Weather happens in the atmosphere, which is held close to Earth by gravity.

• We observe the weather using our senses.

• The weather is temporary, so it does not last forever.

• We can predict what will happen next by making inferences using our brain.

Describing the Weather

• People who are not scientists use adjectives like Hot or Wet or Sunny to describe the weather.

• These are qualitative observations, because they describe the weather without using any numbers.

• This information is not specific enough for scientists to make inferences.

• They need to use quantitative observations, which describe the weather using numbers.

​Observations can be Quantitative or Qualitative.