4th grade Earth and Space Science Challenge

the first fourth of the Moon’s period of revolution around the Earth. When the right half of the Moon is illuminated.

a sedimentary rock made of calcium carbonate that is typically formed with organic remains (such as shells).

The Moon’s period of revolution around the Earth. The moon is half-lit by sunshine and half-immersed in its own shade

the way light interacts with the surface of a crystal, rock, or minerals.

The wearing away of Earth’s surface by the breakdown and transportation or rock and soil.

the way some minerals break along certain lines of weakness in their structure.

a rock or ore containing high amounts of phosphate materials.

a group of stars visible within a particular region of the night sky that appears to form a pattern.

Limitless expanse where all objects & events occur. Outer space is the region of the universe beyond Earth’s atmosphere

the act of revolving around another object.

Rock formed from layers of sediment that overlay and squeeze together or are chemically combined

the phase in which the moon is in conjunction with the sun and is invisible or appears as a narrow waxing crescent.

the color of the fine powder of a mineral obtained by scratching or rubbing against a hard white surface.

a scaled of hardness used in mineralogy.

a whole or part of a plant or animal that has been preserved in sedimentary rock.

The imaginary line on which an object rotates; an imaginary straight line that runs through a body.

type of rock that forms from existing rock because of extreme changes caused by heat, pressure, or chemical environments

the phase of the Moon in which it is visible as a fully illuminated disk or circle.

having a curved shape that tapers at the ends.

A type of rock that forms from molten or partly molten material that cools and hardens.