- What do
- How much universe
- Who first to find out about it
- D.M hypothetical form matter invisible doesn’t emit absorb light
- Has gravitational effect means
- How exerts helps gravity keeps stars together orbit
- Effect makes detectable
- Probably wondering how much in universe
- Surprisingly, 4 times more common normal matter-visible, e.g.
- Reason 4 times more common spread space-can’t see
- Exact amount universe unknown estimates range approx. 25% to approx. 95%
- First suggest existence Dutch astronomer Jacobus Kapteyn 1922
- Also known extensive studies Milky Way
- But back dark matter
- He used evidence stellar velocities
- Stellar velocities speeds stars orbit
- Others undertaken related studies such as Jan Oort + Fritz Zwicky
- Something like the cryogenic dark matter detector-Iron Mine-Minesota which in U.S.A is focussed on dark matter
- Also, telescopes designed specifically evidence dark matter on earth + in space
- We’re coming end so conclusion hope enjoyed,+ learned things-D.M
- Thank you
In preparation for my speech some difficulties I faced were finding some meaningful information about Dark Matter that I understood well. Some of the information I found was a bit technical and in adult language. Another difficulty that came up while preparing my speech was actually finding some juicy background information about Dark Matter because I could’ve answered my question in just a few sentences but I had to fill in time with other relevant info.
The strong points of my presentation were the actual presentation. I was very confident and proud. I understood what I was talking about because I could confidently answer questions about it without checking my cue cards. I also think the order of my information was set out well. I transitioned from each subject and tried to engage the audience in such a scientific matter.
Some work habits I could change to achieve higher results next time are getting my speech organised early so I don’t leave it to the last minute and produce a less organised and practised speech than I could’ve. Maybe I also could’ve tried to fit more in to my speech to make it better because I had an extra 30 seconds.
I could use my skills of speaking and listening in debating because debating is all about speaking and listening to others’ points. I could also use these skills for impromptu/spontaneous speeches. This will be done later in the year so it’s good to be ready for it.
Here are 5 things that were done well (throughout the class):
-We didn’t use too much scientific language and when we did we explained it clearly
-We used clear pictures/graphs and explained them
-We researched well and found relevant info to follow up with explanatory answers
-Our cue-cards were just to give us an idea so we weren’t reading straight off them but speaking to the audience
– We had a fair amount of eye-contact and didn’t check our cue-cards too often
Here are 3 things to avoid when public speaking:
-Don’t look at just one person so try and look and speak to everyone
-Don’t read straight off a sheet so try and speak instead of read to the audience
-Don’t go on too much and go off on a tangent so try to keep everything relevant to the subject
Here are 3 personal goals for future presentations:
-To memorise the speech mostly so I can focus on other aspects of the speech like eye-contact and hand gestures
-To order my sub-topics in a way that each one follows on from each other and transitions well
-To relate my topic to the audience so it’s clearer and easier for them to relate to and understand