The molten rock material under the earth's crust, from which igneous rock is formed by cooling
what is Magma?
100
Of definite shape and volume; not liquid or gaseous.
What is a solid?
100
A period in time during which surface temperatures dropped significantly and huge ice sheets spread beyond the polar region.
What is the Ice Age?
100
The periodic rising and falling of the water level of the ocean due to the gravitational pullsof the moon and the sun.
What is a Tide?
100
The rapid expansion of matter from a state of extremely high density and temperature that according to current cosmological theories makes the origin of the universe.
What is the Big Bang?
200
Molten rock that reaches the earth's surface through a volcano or fissure.
What is Lava?
200
A state of matter different from liquid and solid, with no definite volume and no definite shape.
What is a gas?
200
A gradual increased in the overall temperature in the earths atmosphere generally attributed to the greenhouse effect.
What is Global Warming?
200
An event during which one object in space casts a shadow onto another.
What is an Eclipse?
200
A galaxy in which the stars in gas clouds are concentered in one or more spiral arms.
What is a Spiral Galaxy?
300
Has the shape of a broad, flat dome.
What is a Shield Cone Volcano?
300
The state of matter in which a substance exhibits a characteristic readiness to flow and little or no tendency to disperse, and is amorphous but has a fixed volume and is difficult to compress.
What is a liquid?
300
Describes two distinct bit related phenomena. Volume of ozone in Earth's atmosphere.
What is Ozone depletion?
300
The phases of the moon when it is in conjunction with the sun and invisible from earth.
What is the new moon?
300
is a type of galaxy having approximately ellipsoidal shape and a smooth nearly featureless brightness profile.
An Elliptical Galaxy
400
A steep cone-shape hill formed by the eruption of cinders and other rock fragments that pile up around a single crater.
What is a Cinder Cone Volcano?
400
The movement of landwater to the ocean ,chiefly the form of rivers, lakes, and streams
What is a Surface Run-off?
400
The phases of the moon in which its hole disk is eliminated.
What is a full moon?
400
the result of gravitational interaction of collisions between formerly regular galaxies.
What is an Irregular Galaxy?
500
A cone-shaped volcano build up of layers of lava and layers of rock fragments.
What is a Composite Cone?
500
Water accumulated on the soil surface such as flooded plains, lakes, swamps, and pools.
What is surface storage?
500
A geological interval of warmer global average temperature lasting thousands of years that separate consecutive glacial periods.
What is Inter-Glacial periods?
500
and imaginary line that passes through the north and the south poles of the planet the lines are called the axis of rotation.