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