Answered

WILL UPVOTE EVERY ANSWER! TRUE or FALSE & MULTIPLE CHOICE QUESTIONS! 11 QUESTIONS!

  1. An intrusive igneous rock is fine-grained and formed when lava cools and solidifies.

True

False

  1. Minerals are the building blocks of rocks where rocks are the sum of one or more minerals.

True

False

  1. Most igneous, sedimentary and metamorphic rocks are composed of minerals.

True

False

  1. Plate tectonic forces are responsible for which of the following?
Aadding rock material to earth's surface
Bremoving rock material from the earth's surface
Cboth adding and removing rock material from the earth's surface
Dplate tectonics does not effect the earth's surface

  1. Which of the following is the best example of physical weathering?
Athe cracking of rock caused by the freezing and thawing of water
Bthe transportation of sediment in a stream
Cthe wearing away of rock due to acid rain

  1. What are the two most common elements in the earth's crust?
Aoxygen and silicon
Boxygen and hydrogen
Csilicon and helium

D)helium and hydrogen

  1. Minerals may form a crystal based upon their atomic structure. What controls the atomic structure in a mineral?
Athe rock in which it is found
Ban array of atoms bonding together
Cthe number of atoms in the mineral
Dthe area in which it is found

  1. ________ are essential ingredients in food, medicine, fertilizers, and building materials.
Acarbons
Brocks
Cminerals
Dchocolate chip

  1. Compounds can form from two nonmetals by sharing their electrons in a
Aionic

B)metallic

Ccovalent
Dcation exchange

  1. What is the difference between lava and magma?
Athey originate from different places
Bthey are made of different types of rock
Cthey are different colors
Dafter magma reaches the surface it's called lava

  1. An atom that has an excess positive or negative electrical charge caused by the loss or addition of an electron is called a(n) ______.
Aproton
Bion
Celectron
Dneutron

Verified Answer :

105mtl09
  1. True
    2. True
    3. True
    4. B
    5. C
    6. A
    7. C
    8. C
    9. D
    10. D
    11. D
CintiaSalazar

Answer:

1. False

2. True

3. True

4. D

5. A

6. A

7. B

8. C

9. C

10. D

11. B

Explanation:

1.


Igneous rocks form when hot molten rock crystallizes and solidifies. Igneous rocks are divided into two groups, intrusive or extrusive, depending on where the molten rock solidifies. Intrusive igneous rocks are cooled underground.  When a magma cools below the surface it does so more slowly, allowing a better development of the crystals, which because of that reach sizes that can be observed with the naked eye.  So the sentence is false, because an intrusive igneous rock isn't fine grain.

2.

Minerals consist of solid, natural and inorganic materials, formed from magma or the alteration of existing minerals. Therefore, each one has a chemical structure that depends on its composition, and defined physical properties.  On the contrary, a rock can be an aggregate of minerals or non-minerals and that does not have a specific chemical composition.

3.


These three types of rocks differ in their formation and not in their composition.

Igneous rocks are the result of solidification of magma.

Sedimentary rocks are formed from the alteration and destruction of other rocks that previously existed.

Metamorphic rocks are those that are produced by the evolution of an earlier rock that was subjected to an energy environment very different from its formation.

4.

This is because, as mentioned, there are some types of rocks that form tanton inside as well as on the earth's surface, and the tectonic plates are responsible for removing them.

5.

Physical weathering causes the rock to break, but under no circumstances does it affect its chemical or mineral composition. The resulting changes are perceived in their physical conditions.

An example is rock cracking caused by freezing and thawing of water. The water that is in the small cracks in the rock freezes, increases its size and, after repeating it many times, ends up breaking the rock.

6.

Oxygen constitutes 46.6% and silicon 27.7% of the earth's crust.

7.

The geometry of minerals is determined by the way in which their constituent atoms are joined. Its complexity (or not) is due to slight relocations of atoms due to differences in temperature or pressure when the crystal solidifies.

8.

Minerals like calcium, iron or iodine constitute a good percentage of nutrients obtained from food.

Macro minerals like phosphorus, magnesium, sodium, potassium and trace minerals like zinc, cobalt, copper, selenium are commonly found in medicines.

Fertilizers contain essential minerals like potassium, phosphorus, and nitrogen that are best for the growth of plants.

Minerals like limestone, gypsum, slate, dolomite, or clay are used in building materials.

9.

The covalent bond is the chemical bond between atoms where electrons are shared, forming a molecule. Covalent bonds are established between non-metallic elements, such as hydrogen H, oxygen O and chlorine Cl. These elements have many electrons in their outermost level (valence electrons) and have a tendency to gain electrons to acquire the stability of the electronic structure of noble gas. The shared electron pair is common to the two atoms and holds them together.

10.

The difference between lava and magma is its location relative to the surface of the earth. Magma is found in the inner part of the Earth. The lava is on the surface of the Earth.

Before a volcano erupts, the magma inside increases pressure. At the moment when the volcano erupts, magma turns into lava.

11.

An ion is an electrically charged molecule. It consists of an atom or molecule that is not electrically neutral, that is, has gained or lost electrons. A cation (or cations) forms when the ion is positively charged (i.e., lost of electrons). An anion (or anions) is formed when it is a negatively charged ion (that is, with excess electrons).

Related Questions