A positively charged atom of an element is called a(n) ____.
A)positron
B)neutron
C)ion
D)isotope
E)isomer
Question 2Why was Lord Kelvin's argument for the age of Earth fundamentally in error?
Question 3Permafrost lies beneath ____ percent of the land surface on Earth.
A)0
B)10
C)20
D)40
E)50
Question 4For a neutrally-charged atom to become a positively-charged atom of the same element, it must ____.
A)lose a proton
B)lose an electron
C)gain a proton
D)gain a neutron
E)form a covalent bond
Question 5How does relative dating differ from absolute dating?
Question 6Most major landslides ____.
A)are caused by earthquakes
B)are caused by volcanic eruptions
C)have natural causes
D)are due to human activity and poor engineering
E)are preventable
Question 7Ionic bonds occur when electrons ____.
A)are transferred between atoms
B)are shared by atoms
C)lose their noble gas properties
D)have a positive charge
E)become separated from their atoms
Question 8Scientists have coined the ____________________ Epoch to describe present day geologic time and recognize the impact humans have on planet Earth.
Fill in the blank(s) with correct word
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