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A printable worksheet for the lesson The end of the dinosaurs (KS2). It prints on A4 without the website around it. The answers are on a separate sheet for the teacher.

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KS2 · Ages 7 to 11 (Years 3 to 6)Howardites worksheet

The end of the dinosaurs

Name:Class:Date:

Key words

Asteroid
A rocky or metal-rich object, smaller than a planet, that goes around the Sun.

Choose the right answer

Circle the letter of the right answer.

  1. About what fraction of all kinds of plants and animals died out?
    • AAbout three quarters
    • BEvery single kind
    • CLess than one tenth
    • DOnly about one half
  2. About how wide is the Chicxulub crater?
    • AAbout 180 kilometres
    • BAbout 1,800 kilometres
    • CAbout 1.2 kilometres
    • DAbout 18 kilometres
  3. After finding the iridium clue, what did scientists search for next?
    • AA crater of the right age
    • BIridium dust on the Moon
    • CA comet's dust trail in space
    • DA dinosaur still alive today
  4. For about how long was sunlight blocked after the impact?
    • AA single night
    • BMonths or years
    • CMillions of years
    • DA few minutes

True or false?

Is the answer given right? Tick True or False.

  1. On the same timeline the first dinosaurs are about 23 metres from today. About how long ago did they live?

    Answer given: About 2,300 million years ago TrueFalse

  2. Why did lots of iridium in a thin layer of clay point to an asteroid?

    Answer given: Iridium comes from the bones of dead dinosaurs TrueFalse

Write your answer

Answer in a word or a short sentence.

  1. Why is all of written human history only about half a millimetre on this timeline?
  2. Why were mammals able to spread and change after the impact?

Task

Make the timeline from the worked example with a long piece of string or a corridor: 1 metre stands for 10 million years. Peg up cards for today, the Chicxulub impact (6.6 m), the first dinosaurs (about 23 m) and, if you have space, the formation of Earth (about 454 m away, which is a very long walk!).

Howardites · free to copy for use in your classroom · answers are on the separate teacher's answer sheet