Terms/Questions per Day
Terms
40 new/unreviewed 40 total
Term
What is the Proplanetary disk
Definition
It is/was a spinning belt of dense gasses and dust that surrounds a newborn star. Pressure within the center mass of the disk (newborn star) triggers nuclear fusion. FUN FACT! Nuclear fusion is the process that the sun used, it combines two lighter atoms into a bigger one.
New/Unreviewed
Term
Approximately how long ago was earth created? And how many stages of life has it gone through?
Definition
4.6 Billion years ago. and four stages.
New/Unreviewed
Term
What are the four stages of earths life?
Definition
1.) Precambrian 4.6bya- 543mya 2.) Paleozoic era 543mya- 250mya 3.) Mesozoic era 250mya- 65mya 4.) Cenozoic era 65mya - now
New/Unreviewed
Practice Test Scores
Practice Tests
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