3) A heavily cratered surface, A)indicates the surface is young. Bindicates the

Question

3) A heavily cratered surface, A)indicates the surface is young. Bindicates the surface is ancient around 4 billion years old. C) indicates nothing about the age of the surface. D) indicates the surface is middle aged. 4) The process of modifying a planet by weather is called A) Weathering B) Basin Flooding. C) Differentiation. D). Volcanism 5) The process of modifying a planet by Volcanic activity is called A) Weathering. B) Basin Flooding. Differentiation D)Volcanism 6) The Sun is almost entirely made of A) Hydrogen. B) Helium C) Carbon. D) Nitrogen. 7) What are the states of matter that temperature determines? A Solid, liquid, gas, and plasma. B) Solid, condensate, and plasma. C) Solid, liquid, and gas. D) Sumerian, liquid, gas, and plasma.

Explanation / Answer

3 .(B) indicates the surface is ancient around 4 billions years old. A heavily cratered surface (Mercury, Moon) indicates that the planet is not currently active, and has not been active for (perhaps) billions of years. A non-saturated surface is an indicator of past (Mars, Venus) or current (Earth)

4 .(A) weathering Weathering is the breaking down of rocks, soil, and minerals as well as wood and artificial materials through contact with the Earth's atmosphere, water, and biological organisms.

5.(D) Volcanism :Volcanism (or vulcan activity) is the eruption of magma onto the surface of the Earth. Magma under the crust is under very great pressure. When folding and faulting occur, cracks or fractures appear.

6.(A) Hydrogen : The Sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur.

7. (C) solid , liquid and gas :The point at which matter subjected to a particular temperature under conditions of constant pressure begins to change its phase is called the phase change threshold. At this temperature, every bit of the substance exposed to the heat will change its state. A shift from to a solid to a liquid occurs at the melting point, and the transition from a liquid to a gas takes place at the boiling point. Conversely, the moment of change from a gas to a liquid is the condensation point and the shift from a liquid to a solid takes place at the freezing point.

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.