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Which of the following is caused by the interaction of the solar wind with magnetic lines of force and gases in polar regions?Roughly 50% of Earth’s surface is covered by oceans and seas. Iron, Oxygen, Silicon, and Potassium make up most of the mass of the whole Earth
TrueThe core amounts for most of the volume of the earthEarth's core is known to be dense and thought to be mostly composed of iron, nickel with small quantities of oxygen, sulphur, silicon and carbon. What proportion of Earth's mass is contained within the core?About 1/3The inner core is so hot, it’s liquid, and therefore some seismic waves can’t travel through it FALSE--- the outer core, not the inner core, is liquid and impedes travel of some seismic waves. Silicon is by far the most abundant element of Earth’s crust by mass proportion; iron is the second most abundant. FALSE—because oxygen bonds to other elements to form many minerals, it account for about half (by weight) and more than 90% (by volume) of Earth’s crust. Imagine yourself in a universe that is exhibiting a blue shift of light from distant galaxies. This must mean:It’s collapsing Identify the FALSE statement. The Big Bang:Explains how our Solar System developedOur MoonWas formed by the collision of Earth with a Mars-sized protoplanet Was a separate small planet before it was captured by earth’s gravity (theory disproven)Is 93 million miles away from Earth (False- it is about 238,855 miles from Earth)Is 4.3 light-years away from Earth (False)Has a composition similar to Earth’s core (false)Our Solar SystemIs centrally positioned in the Milky Way Galaxy (false- positioned at outskirts)
Formed 10 billion years ago (False- Formed 4.6 billion years ago)Has a massive, first-generation star in its centre (False- The Sun is not a first generation star)Completes one rotation around the centre of the Milky Way every 250 million years. All answers are correctMars, Jupiter, Saturn, and Venus are the Jovian PlanetsFalse1.The planets inside the orbit of the earth are called the Inferior Planets: Mercury and Venus.