Particles of Matter
A substance whose particles are packed close together.
Solid.
This subatomic particle has no electrical charge and may not always be the same in number as the proton?
Neutrons
This scientist proposed the theory of the Continental Drift.
Dr. Alfre Wegener
This term means "Earth like" in some way.
Terrestrial.
A substance with a definite volume but no shape.
Liquid.
These are the three basic subatomic particles in an atom.
Protons, Neutrons, and Electrons.
This term means "scratches in rocks caused by glaciers".
Striations.
This separates the inner and outer planets.
The Astroid belt.
A substance that does not have a definite shape or volume.
Gas.
To determine an atom's atomic number you must count the number of these.
Protons in the nucleus.
This is the name of the supercontinent that stated breaking apart 175 million years ago.
Pangaea
These four planets make-up the inner planets.
Mercury, Venus, Earth, Mars.
Anything that takes up space and has mass.
Matter.
These two subatomic particles make up the center of the atom.
Protons and Neutrons.
These are the currents that push plates in Earth's mantle.
Convection Currents.
These are the characteristics of the inner planets.
Close together, rocky terrain, shorter orbits.
Matter is made up of tiny particles that you cannot see.
Atoms.
In a neutral atom, the number of protons and electrons are this.
Equal.
This scientist proposed the theory of Plate Tectonics which supported the theory of Continental Drift.
Dr. Harry Hess
This is the force that governs all planetary movement in the solar system.
Gravity.
A substance that holds its shape and has a definite volume.
Solid.
The theory of Plate Tectonics supports the theory of Continental Drift by explaining this.
It explained how the continents moved.
This is a celestial object that orbits a planet.
The moon.
This measures how much space matter takes up.
Volume
These are the four pieces of evidence that support the Theory of Continental Drift.
Fossil evidence, continental fit, glacial evidence, and landforms and rock layers.
The greater the mass, the greater the gravity.
True or False
True.
The particles in this move the fastest and spread out the most.
Gas
The greater the distance between two objects means there is greater gravity.
True or False
False.