Explanation:

 Isotherms, lines connecting points of equal air temperature are used to map the geographic temperature pattern across the earth's surface. The spacing of isotherms depicts the temperature gradient across a portion of the Earth's surface. Widely spaced isotherms indicate a small change in temperature over distance and closely spaced isotherms indicate large changes in temperature. Hence both Statements 1 and 2 are correct. • The shape of isotherms, as they appear on a map, is influenced by the distribution of large land masses and water bodies and the time of the year. • Temperature gradients are usually low (isotherms are widely spaced) over the eastern margins of continents because of warm ocean currents. • While passing through an area with warm ocean currents, the isotherms show a poleward shift. E.g. North Atlantic Drift and Gulf Stream in the Northern Atlantic; Kurishino Current and North Pacific Current combined in the Northern Pacific. • Temperature gradients are usually high (isotherms are closely spaced) over the western margins of continents because of cold ocean currents. o The cold currents are usually found on the west coast of the continents in the high and middle latitudes in both hemispheres. E.g. Benguela, Canary, California, Alaska, and Peru Current etc. • Isotherms bend much more between seasons in the Northern Hemisphere than in the Southern Hemisphere. The Southern Hemisphere is more uniformly water than the Northern Hemisphere. Large landmasses in the Northern Hemisphere cause isotherms to bend toward the equator in winter and poles in summer as they change their temperature much more than the water. Air temperatures over land fluctuate more because land changes its temperature much more rapidly than ocean water. Thus they shift north and south much more over land through the year than they do over water.