Grade 10

The image shows

• Trace fossil

• Amber preserved fossils

• natural casts

When minerals carried by water are deposited around a hard structure and may also replace the hard structure itself, this is

• Trace fossil

• Amber preserved fossils

• Permineralization

All organisms that fie will become fossils

• True

• False

Fossils are formed in

• Wetlands

• Bogs

• Rivermouth

• Floodplains

• All of the above

An atom or element that has the same number of protons but different number of neutrons is called

• Ion

• Isotope

Which carbon isotope is radioactive?

• Carbon 12

• Carbon 13

• Carbon 14

A technique that uses the natural decay of unstable isotopes found in materials in order to calculate the age of the material is called

• Relative dating

• Radiometric dating

If objects are older than 45,000 years old , it is better to use the isotope carbon 14

• True

• False

Meteorites don’t get recycled or undergo erosion as earth’s rocks

• True

• False

Index fossil must be

• Abundant

• Easily recognized

• Widely spread

• Existed for a short time

• All of the above