Listen&Learn: carbon dioxide Datingþ experts use carbon dating discover the age of a fossil.

Listen&Learn: carbon dioxide Datingþ experts use carbon dating discover the age of a fossil.

Pre-listening language

  • carbon dioxide: a typical chemical factor that will be needed for existence
  • non-renewable: the stays of a system that existed in the past
  • radioactivity: the capacity of a substance to produce energyfrom the decayof their particles
  • decay: to-break down or decompose
  • half-life: the amount of time required for 1 / 2 of a compound to fully decay
  • estimate: to create an acceptable guess
  • fossil fuels: all-natural fuels like oil orcoal

Listening activity

Gapfill fitness

Understanding issues

1. boffins need carbon dioxide matchmaking to determine

2. 5700 ages may be the timeframe it requires

5700 age may be the amount of time it takes for 1 / 2 of a fossil’s carbon-14 to decay.