What happens to wind during a cold front? As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning. Atmospheric pressure changes from falling to rising at the front. Do cold fronts bring high wind? In the spring, these cold fronts […]

What are 3 characteristics of archaebacteria? The common characteristics of Archaebacteria known to date are these: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat; (3) the occurrence of ether linked lipids built from phytanyl chains and (4) […]

What is fast moving lava called? The list of hazards associated with volcanic eruptions is long and varied: lava flows, explosions, toxic… Lava flowing toward the sea from Kilauea volcano, Hawaii, takes two recognizable forms: fast-flowing, ropy lava, called pahoehoe, and thick, blocky lava, called aa. What type of lava has the lowest viscosity? mafic […]

Is the inner core liquid iron? The inner core is a hot, dense ball of (mostly) iron. It has a radius of about 1,220 kilometers (758 miles). However, unlike the outer core, the inner core is not liquid or even molten. The inner core’s intense pressure—the entire rest of the planet and its atmosphere—prevents the […]

How does a flood start? How floods form. A flood occurs when water inundates land that’s normally dry, which can happen in a multitude of ways. Excessive rain, a ruptured dam or levee, rapid melting of snow or ice, or even an unfortunately placed beaver dam can overwhelm a river, spreading over the adjacent land, […]

How is Mohs hardness measured? The Mohs Hardness Scale is used as a convenient way to help identify minerals. A mineral’s hardness is a measure of its relative resistance to scratching, measured by scratching the mineral against another substance of known hardness on the Mohs Hardness Scale. How is the hardness of a mineral determined? […]

Is June 21 always the longest day of the year? When is the longest day of the year? In the northern hemisphere, the summer solstice, or longest day of the year, takes place between June 20 and 22 each year. This year it falls on Monday, June 21 – when the UK will enjoy 16 […]

What is major example of igneous rock? Common intrusive rocks are granite, gabbro, or diorite. The central cores of major mountain ranges consist of intrusive igneous rocks. When exposed by erosion, these cores (called batholiths) may occupy huge areas of the Earth’s surface. What are common types of igneous rock? Common types of igneous rock […]

What is a simile for tornado? tornado, whirlwind, tempest (literary), twister (US, informal), storm. What do you call a small tornado? 1. Rope tornadoes. Rope tornadoes are some of the smallest and most common types of tornadoes, getting their name from their rope-like appearance. Most tornadoes begin and end their life cycle as a rope […]

What are the continents by size? Explorers Continent Area in Square Miles (Square Km) The World 57,308,738 Sq. Miles (148,429,000 Sq. Km) Asia (including the Middle East) 17,212,000 Sq. Miles (44,579,000 Sq. Km) Africa 11,608,000 Sq. Miles (30,065,000 Sq. Km) North America 9,365,000 Sq. Miles (24,256,000 Sq. Km) What country has no Covid 19? North […]