PLEASE GIVE ME THE ANSWERS I DONT KNOW THIS IM BAD AT SCIENCE
Which allowed scientists to determine that Earth was at least 4.3 billion years old?(1 point)
a. magnetic field surrounding zircon
b. the electrical conductivity of uranium ions
c. the radioactive decay of uranium to lead
d. chemical reactivity of zircon ions
tell me all the answers to this please
the radioactive decay of uranium to lead
The composition of moon rocks and some Earth rocks are similar
4.6 billion years ago
Its hydrogen atoms are heavier than others.
Earth's surface is constantly changing.
if your in 6th grade like me in connexus and bad at science look at this
i know the answer are you good a pre algebra i have a question below ill give you the awencer if you can help me pleas help i have watid a hour and this is due in a fue days
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im looking give me a sec im looking at my old note book i have 2 now
i am in 8th grade
wut are the answers to this
HEAR YOU GO
1.Zircon is a zirconium silicate mineral with a chemical composition of ZrSiO4. It is common throughout the world as a minor constituent of igneous, metamorphic, and sedimentary rocks. Zircon is a popular gemstone that has been used for nearly 2000 years.
2.Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years.
3.lead-206
Three stable lead nuclides are the end products of radioactive decay in the three natural decay series: uranium (decays to lead-206), thorium (decays to lead-208), and actinium (decays to lead-207).
4.In powder form, zirconium is highly flammable, but the solid form is much less prone to ignition. Zirconium is highly resistant to corrosion by alkalis, acids, salt water and other agents. However, it will dissolve in hydrochloric and sulfuric acid, especially when fluorine is present.