the same substance always has the same _____.
as pressure increases, density ______.
decreases, thermal expansion
as temperature increases, density _____. this is due to ____ ______.
water expands when it _____.
most changes are _____.
water is most dense at _ degrees celcius, when it is a ____.
ice cubes float
how do we know that ice is less dense that water?
oblate spheroid, perfect sphere
the true shape of earth is an ____ _____, but from space it looks like a ____ ______.
the best MODEL of earth is a _____.
the altitude of _____ equals your latitude
to determine the earth's circumference, the altitude of the sun is needed at ____ locations.
east, west, equator
latitude lines go from _____ to ____ west, just like the _______.
______ lines measure distances north or south
longitude, east, west
______ lines go north to south, and measure distances from ____ to ____.
_____ is based on obervations of the sun.
the closer the isolines/ contour lines, the _____ the slope.
another name for slope is _____.
west, east, 24
the earth rotates from _____ to _____ in approx. __ hours.
the half-life of a radioactive element ______ be changed.
ocean crust is _____ and made of ______.
continental crust is ______ and made of ____.
_____ moves from source to sink; high to low.
mountains form through a process called ______.
________ rocks are most likely to have fossils