Home Learning Monday 18th May 2020 – Science 1

Good morning lovely Year 5. How are you today? I hope all is well with you.

This half term, we are thinking about forces. A great example of forces in action is the pole vault.  It’s very daring athletic event in which competitors attempt to vault over a high bar with the aid of an extremely long flexible pole. I imagine it would take lots of courage to complete!

Watch the video of pole vaulting. If you watch to the end, you will see the vault in slow motion.

Pole vault world record

Think about the following questions:

  • What might the pole be made from?
  • How does the athlete use the pole to gain height?
  • What forces do you think are in action?
  • Does it matter how fast the athlete runs?

Challenge

Describe what you saw using only one word.

 

Now, take a look at the post Science 2 about air resistance.

 

Information about pole vaulting (and levers)

The athlete jumps with their back to the bar and leads over it with their head and shoulders. This method, championed by Dick Fosbury, became possible when foam landing beds were introduced in the early 1960s replacing sawdust landing pits. Can you imagine landing in sand after such a large jump?

The modern pole is made from materials that are very strong but lightweight such as carbon fibre (the same material is used in modern fishing rods). The length of the pole depends upon the athlete, especially their height and weight.

To gain enough height to clear the bar, the athlete uses the pole as a lever. Energy is gained through sprinting forwards with the pole. The energy is then transferred to the pole to lever the athlete upwards. The pole is bent back by the athlete nearly to a right angle! As the athlete pushes his body forwards, the pole levers the athlete upwards by springing back into an upright stance. The athlete must then twist and push their body to clear the bar.

12 Comments

  • Aayaan Posted 18th May 2020 4:04 pm

    I think pole vaulting looks scary. It would be quite hard to jump over the pole without touching it.

    • Miss Buckley Posted 18th May 2020 4:09 pm

      I think it looks scary too! I would imagine that it’d be rather painful if you hit the bar. What forces did you see in action?

    • Madiha Posted 18th May 2020 4:49 pm

      I agree even if I could do it I would never even try it looks so scary.

      • Miss Buckley Posted 18th May 2020 5:06 pm

        That sounds like me, even if I could, I wouldn’t because I would be too frightened.

        • Madiha Posted 18th May 2020 5:55 pm

          Me to – I can’t do scary things because it frightens me.

          • Miss Buckley Posted 19th May 2020 10:11 am

            I think you would be right to be cautious in competing in dangerous sports – that’s why they take lots of precautions and use safety equipment.

  • Madiha Posted 18th May 2020 6:01 pm

    Miss Buckley do you know when you said “Think about the following questions” should we answer the questions in our exercise book or are we just thinking about them?

    • Miss Buckley Posted 19th May 2020 10:13 am

      It’s up to you Madiha. I think discussion is brilliant – it’s a time to explore your ideas. however, it’s good to have a record too. You decide. Hope you are okay. Thanks for posting.

      • Madiha Posted 19th May 2020 3:52 pm

        I wrote the questions in my book and answered them. I will have a discussion to and thanks for asking yes I’m okay.

        • Miss Buckley Posted 20th May 2020 9:36 am

          It’s good to hear you are getting on with your work. I’m glad to hear you are okay.

  • Madiha Posted 19th May 2020 5:51 pm

    How about you?

    • Miss Buckley Posted 20th May 2020 9:36 am

      I am well, thank you for asking.

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