Atoms
positive particles found in the nucleus
protons
The speediest planet in our solar system
Mercury
First American to orbit the Earth
John Glenn
A scientist who studies the structure of the Earth
geologist
Animals that have jointed appendages, segmented bodies, and external skeletons
crustaceans
A tiny group of two or more atoms that are bonded tightly together
molecule
Has the largest moon, Ganymede.
Jupiter
The first man to set foot on the moon.
Neil Armstrong
Rock that is formed by sand and mineral particles pressed together
Sedimentary Rock
Spiders belong to a different class than insects and are known as this
arachnids
Substances that are composed of more than one type of atom bonded together
compounds
AN orbit that allows a satellite to remain in the same spot above the earth at all times
geostationary
The first man to travel in space.
Yuri Gagarin
Rock that has been changed by heat or pressure into a new kind of rock
Metamorphic rock
A single rise or depression in a wave
shell
Large clouds of gas and dust floating in space
nebulae
Man known as th "Father of Modern Rocketry."
Robert Goddard
Volcano formed from large amounts of very fluid lava that builds up gradually, Hawaiian Islands formed by the type of volcano
Shield Volcano
A back and forth motion that repeatedly follows the same pattern
oscillation
The chemical reaction that occurs when a substance reacts rapidly with oxygen
combustion
Brightest star in the sky, found in the constellation Ursa Minor, also known as the North Star
Polaris
Man who discovered that white light is a combination of many colors
Sir Isaac Newton
Formed by alternating layers of tephra and lava, Mt. St. Helens is an example
Composite Volcano
Hottest region of the sun's atmosphere
The corona