What is a contour interval?
a. a loop formed by contour lines that indicates a peak or depression
b. the elevation difference between two adjacent contour lines
c. an imaginary line that joins points of equal elevation
d. the degree of a slope's steepness

Dwayne filled a small balloon with air at 298.5 k. he put the balloon into a bucket of water, and the water level in the bucket increased by 0.54 liter. if dwayne puts the balloon into a bucket of ice water at 273.15 k and waits for the air inside the balloon come to the same temperature, what will the volume of the balloon be? assume the pressure inside the balloon doesn’t change. type the correct answer in the box. express your answer to the correct number of significant figures. the volume of the balloon at 273.15 k is liters.

Fission of uranium-235 products energy and a. isotopes of smaller elements b. isotopes of larger elements c. lighter isotopes of uranium d. heavier isotopes of uranium

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?