Remember to use the device for speaking practice. Or click on [Troubleshoot Recording] button below if facing problems.
You are in free guest mode.
Timed Practice
Revision List
Attempt History
Progress Tracking
Create a free account to unlock these tools
Practice Speaking: Re-tell lecture
ID: #3679
Medium Iron on earth
Transcript:
My name is Andrew Ponson and I'm a cosmologist at University College London. So my interest starts with the formation of the earth itself almost a third of the entire earth's mass is Iron and even in the deepest reaches of interstellar space you'll still find traces of it. In fact it's the single most common metal in existence. Like most heavy elements we can trace it to ancient stars that exploded in events called supernova. A combination of conditions that is pretty unique. You would need a very intense conditions so very high temperatures. You're talking about few billion degrees. So hundreds of times hotter than the core of the sun. So would not be feasible on earth to try and make iron.
Recorded Answer:
Spoken Keywords:
A.I Scores
Speech Feedback
Your Response:
Status: A.I. Engine Standing by...
Sample Answer
"Pearson updated its scoring criteria on November 4, 2024. Templates are now banned, and responses identified as template-based will be flagged by human reviewers. Stay tuned for new strategies and updated answer formats!"
Explanation
Be the first!
No community answers here yet — submit yours and help others learn.
Comments:
–