pattern boulder burning change
insect light liquid machine magnet
straight-line motion sun's position sun's
air animal animals balance behavior
life earth materials earth's rotation
pebble plant precipitation prediction
prehistoric pulling pushing reasoning
month motion ocean organisms parent
seasonal shape similarities similarity
rock ruler salt science scientist
conditions daily day death differences
week weight zigzag machine magnet
size sky soil solid star states of matter
characteristics chart circular cloud
dinosaur dissolving distance diversity of
size teamwork temperature thermometer
energy food freezing gas gravity growth
magnification magnifier mammoth mixture
tree universe vibration water weather
growth position habitat heat horsetail