Physical Geography

Use this for “Where is the Sun overhead at noon on 21 June, day 172 of the year?”

Use this for “How much sunlight, averaged over 24 hours, reaches the top of the atmosphere at 40° N on the June solstice?”

Use this for “A place averages 18 °C with 300 mm of rain spread through the year. Is it a desert, a steppe or not dry?”

Use this for “A city’s coldest month is −8 °C and its warmest 23 °C, with rain every month. Name its Köppen climate.”

Use this for “A 75 km² basin has 180 km of streams: 40 of order 1, 9 of order 2 and 2 of order 3. Find its drainage density, bifurcation ratios and stream frequency.”

Use this for “A valley has a flat floor and steep walls, with small valleys hanging high on its sides. What made it?”

Use this for “Only 10 % of a forest is left. With z = 0.25, what share of its species will it lose?”

Use this for “The warmest month averages 24 °C at sea level. About how high is the treeline?”

Use this for “A place averages −5 °C with 400 mm of rain and conifer forest. Which biome is it?”

Use this for “A 100 cm³ core weighs 132.5 g dry and holds 30 cm³ of water. Find the bulk density, porosity and the share of pores filled.”

Use this for “A loam holds 0.32 at field capacity and 0.15 at wilting point. How much water is available in a 60 cm root zone?”