Merecury, Venus, Earth and Mars are Earth-like planets

Preserved remains of a once-living organism

the study of past human life as revealed by preserved relics

Experiments in which information about the test is kept from the participant

Study of Earth's physical Structure, history, processes acting on it and its rocks

Jupiter, Saturn, Uranus, Neptune are Jupiter-like planets

When organic material chemically changes a fossil into a rock

Historical document test that looks wether the document contradicts other known historical facts

This type of Science uses observable, repeatable experiments to try to discover truth.

Decayed remains of once-living creatures

Force of attraction existing between any 2 masses

Most fossils are found in this type of rock

Process of Counting tree rings to determine the age of a tree

This type of Science relies on relics from the past and historical records to try to discover truth.

Process of wearing or grinding something down by wind, water or other natural agents.

Branch of Science that deals with the physical universe beyond Earth's atmosphere

Extinc marine animal from the Cambrian period but also found in earlier layers

When artifacts are found in rock or earth that is layered , the deeper layer hold the older artifacts

Anything that has mass and takes up space

Idea that states "the present is the key to the past" and requires the Earth to be millions of years old

Gaseous Layer surrounding the Earth or another heavenly body

Theory that states that most of the geological record was formed as the result of one or more catastrophes.

Study of life's history as revealed in the preserved remains of once-living organisms

This method provides a framework by which scientists can answer questions in an ordered way.

When the minerals in rock chemically react with air or water, changing its composition