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How could scientists determine that volcanoes were active thousands millions or even billions of years ago?
Wiki User
∙ 11y ago
Scientists have found lava flows and pyroclastic deposits and tested them using radiometric dating. The results showed that some of these deposits are billions of years old.
Wiki User
∙ 11y ago
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Why do they think there are hundreds of thousands of galaxies?
They (scientists) think there are hundreds of thousands of galaxies because the universe is limitless so there may be billions of galaxies!
How many thousands equals 1 billions?
A million thousands.
What is dominant volcanoes?
Dominant Volcanoesare volcanoes that is not exploding it explodes 1-3 times a billions of years.
How many ten thousands are in 8 billions?
800,000 ten-thousands are in 8 billion.
How many thousands in a trillion?
1 trillion = 1 billion thousands or 1 thousand billions.
Why do scientists believe that there are billions of stars in galaxies?
Because they can see them.
What is the correct numeral for 12 billions 88 thousands 32 hundreds?
12,000,091,200 is the correct numeral for 12 billions, 88 thousands, and 32 hundreds,That is because when you add 88 thousands(88,000) and 32 hundreds(3200) you get 92 thousands (92000) so you just have to add the 12 billions to that and Ta Da. You are done.Hope that helps, even if it is easy.
What happened to the dinosaurs when volcanoes erupted?
some dies, some survived, there were billions of dinosaurs
How many billions in 5000000 thousands?
5 Got it right!
300 billions divided by 600 thousands?
0.5
What year did volcanoes get noticed?
Volcanoes - which go back to the earliest days of earth as a planet - were here billions of years before man was. Man has never know a time without volcanoes, hence there is no "year that volcanoes got noticed".
How do scientists best determine the age of the earth?
The best estimate for Earth's age is based on radiometric dating of fragments from the Canyon Diablo iron meteorite. From the fragments, scientists calculated the relative abundances of elements that formed as radioactive uranium decayed over billions of years.
