Rocks Chapter 4
Terms
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- Cleavage of a mineral is related to a mineral's
- crystalline structure.
- Which symbol represents carbon?
- C
- Which symbol represents calcium?
- Ca
- Which kind of rock is formed when volcanic lava cools?
- igneous
- A student wants to study how igneous rock changes to sedimentary rock. Is this a good project if the student needs to complete the study within a month?
- No
- Sedimentary rocks are not found on the Moon because
- There is no weathering
- Rocks found on Earth are generally classified as sedimentary, metamorphic, or igneous. On which basis are these classifications made?
- How The Rocks were formed
- The formation of metamorphic rocks depends on all of the following except A.the composition of the parent rocks. B.Earth's magnetic field.C.temperature. D.pressure.
- The Earth's magnetic field
- When rocks undergo weathering, they become
- Sedimentary
- Sedimentary rocks can be converted into magma by undergoing which processes?
- Heat and Pressure
- What type of rock results from the cooling of lava from a volcano?
- Igneous
- The total number of protons and neutrons in an atom is the
- Atomic Mass
- Igneous rocks are classified by where they are formed. Which type forms underground?
- Intrusive
- Igneous rocks form from
- Magma
- When magma reaches Earth's surface it becomes
- Lava
- Which of the following elements is part of the chemical formula for table salt? Na , Si, S or O
- Na
- How many atoms of hydrogen are in a molecule of water?
- 2
- When mud and water are combined, the result is
- Mixture
- Which are the two most abundant elements dissolved in seawater?
- Na & Cl
- Which is a mineral? A.glass B.graphite C.magma D.marble
- graphite
- When an igneous rock is changed by the action of heat and pressure it becomes
- Metamorphic
- Compared to rocks in Earth's crust, rocks in the mantle are more
- dense
- Some of Earth's rocks are formed by the cooling of a molten material called
- magma
- What type of rock is sandstone?
- sedimentary
- Extrusive rocks are formed by
- Magma cooling on the Earth's surface
- A rock that contains a metal is known as
- Ore
- Rocks are affected by heat and pressure. One source of this pressure is
- The mass of overlying rock
- Water is
- a compound
- What type of rock is formed by volcanic activity?
- Igneous
- Earth's core is mainly composed of
- Iron and Nickle
-
All of the formulas below represent minerals. Which one contains iron?
A. PbS B. Fe3O4 C. SiO2 D.CaF2 - B
- Each element in the periodic table is assigned an atomic number which is the same as
- the number of protons in the atom's nucleus.
- Which is the correct symbol for the element sodium?
- Na
-
Oxides are formed when oxygen combines with one other element. Which formula
A. CaCO3 B.CH3OH C. O2 D. Fe2O3 - D
- When some chemical elements and compounds form solids from the liquid state, the atoms or molecules form a definite or molecule forms a defiinite, regular, three-dimensional pattern. Such solids are described
- crystalline
- Which mineral characteristic could be used to distinguish between talc and calcite? A. hardness B. location C. fracture D. color
- . hardness
- A mineral can be identified by breaking it and then examining the directions it broke in. This test uses the mineral characteristic called
- cleavage.
- According to Mohs' scale of hardness, your fingernail has a hardness value of about 2.5. Which two minerals could you scratch with your fingernail?
- gypsum and talc
- What term should be used to describe a mineral crystal that had all of its edges of equal length, and all of its surfaces meeting at 90° angles? A.cubic B.monoclinic C. hexagonal D.triclinic
- A
- If a mineral cools quickly it's crystals will
- Be small
- If a mineral cools slowly it's crystals will be
- Large
- Intrusive rocks have crystals that are large or small.
- Large
- Extrusive rocks have crystals that are usually
- small of none
- Cooling rate will
- determine the size of crystals