Homework help - Year 10 Physics

[wavesmax]

Year 10 Physics - For the love of god someone please simplify this, especially the second point
• A discussion on how the radiation accelerated

I just can't find anything so I think we are misunderstanding. We have exhausted google! 🥴

[DadDadDad]

Are you missing some words here?

[dementedpixie]

Is there supposed to be a picture or more info?

[DavenotChas]

Is it to do with half life?

[mineofuselessinformation]

Sounds like it's a chain reaction. Every fission reaction produces two protons (I think) so the reaction doubles every second/whatever time interval they give.

[IWouldPreferNotTo]

There definitely seems to be context missing. The only thing I can think of is that you have a space vessel with a large solar sail, the radiation from the sun creates a force acting on the sail which accelerates the vessel. Like the spinning foil paddles in the glass bulb you can put on a window sill.

The other idea is that it's discussing nuclear fission where the neutrons emitted cause atoms to split resulting in more neutrons being created and splitting more atoms in an increasing amount, which is what gives you a runaway process and a core meltdown. If that was the case then they might mention adding boron rods which absorb the stray neutrons slowing down the process

[IWouldPreferNotTo]

Or it could be adding graphite rods. It's been a while

[PurpleDaisies]

I’m not sure you’ve copied all the text.

[wavesmax]

Sorry it's been a long day, I forgot the photo!

[IWouldPreferNotTo]

This would be the melt down at chernobyl. There was an uncontrolled chain reaction where the fission process ran away causing a meltdown. Radioactive dust and gasses were then emitted and the weather was unusually blowing east to west meaning than radioactive dust blew over to the UK.

For details on the runaway process Google chain reaction runaway/meltdown

[SheepyFun]

Can I start with saying how badly worded that question is (and I have more than one physics degree).

I'm assuming 'radiation' is referring to radioactive caesium and iodine (having done some googling myself, I admit). Caesium and iodine particles were sent into the atmosphere when Chernobyl exploded. They reached here carried on the wind, and then rain washed them out of the atmosphere onto the ground (apologies if this is obvious to you). I don't know if the acceleration of the radiation refers to wind after the explosion, or how the reactors should have worked to start with - caesium is a by-product of nuclear fission.

Sorry that's probably not much help!

[IWouldPreferNotTo]

Following up. I'm a little bit confused why gamma radiation is a key word when from memory alpha and beta radiation was the main risk from the dust. Gamma radiation was high at the site but not from what I remember at a distance

[LarkDescending]

Since the report is to be that of a TV weather presenter, presumably the acceleration referred to is the rate of spread caused by prevailing weather conditions, rather than the functioning (or malfunctioning) of the reactor.