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8th Grade Semester 1 Exam Review 18/19 Flashcards | StudBud
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8th Grade Semester 1 Exam Review 18/19
8th Grade Semester 1 Exam Review 18/19
39 terms
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Questions cover Matter, Minerals, Rocks, Plate Tectonics and Earthquakes
Flashcards
39 cards
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1
A mineral is classified as an ore as long as
its rare and valuable
its profitable and useful
its solid and natural
it can be used for jewelery
2
The size of a salt crystal
physical property
chemical property
3
The density of a substance
physical properties
chemical properties
4
On Earth, water is naturally found in all states except
plasma
solid
gas
liquid
5
Andesitic rocks have mineral compositions between those of _______ and basaltic rocks
granitic
metamorphic
organic
conglomerate
6
Most minerals are composed of ____ combined with other elements
calcium and oxygen
carbon and hydrogen
silicon and oxygen
chlorine and sodium
7
Detrital rocks are named according to
the color of the sediments
their locations
their ages
the size and shape of the sediments
8
The variables that do not change in an experiment are called
dependent
constants
independent
9
To calculate density,
multiply volume by mass
divide volume by mass
multiply mass by volume
divide mass by volume
10
State of matter can be changed by ____ or temperature
weight
observation
pressure
density
11
A rock is
either igneous or sedimentary
a pure mineral
always made of molten material
mixture of minerals, organic matter, volcanic glass etc.
12
Foliated rocsks are distinguished by
large pores
layers
the enlargement of mineral grains
the shape and size of the sediments
13
Metamorphic rocks can be formed from all of the following except
pressure
the presence of hot, watery fluids
the formation of minerals from solutions
temperature
14
One of the softest minerals is
graphite
corundum
diamond
amethyst
15
The processes involved in the rock cycle include all of the following except.......
condensation
weathering
erosion
compaction
16
An instrument used to measure air pressure is a
hygrometer
barometer
thermometer
17
the attraction of two ions
physical property
chemical property
18
The presence of the same ___ on several cotinents supports the idea of continental drift
fossils
both fossils and rocks
neither fossils nor rocks
rocks
19
The number of protons and neutrons in an atom's nucleus
atomic number
proton
ion
mass number
20
The Glomar challenger supported the theory of seafloor spreading by providing
high altitude photos of existing continents
samples of rock from different locations
samples of plant life from different locations
direct measurement of movement of continents
21
The sharing of electrons by elements to form compounds
physical properties
chemical properties
22
The solid state of water
chemical property
physical property
23
A positively charged ____ has more protons than electrons
neutron
molecule
isotope
ion
24
causes of iron changing to rust when it reacts with water
physical property
chemical property
25
All of the following are minerals except
gold
salt
sugar
quartz
26
light colored igneous rocks with a lower density than basaltic rocks
basaltic
granitic
27
Plates move apart at ____ boundaries
magnetic
divergent
convergent
transform
28
The most common state of matter in the universe
solid
plasma
liquid
gas
29
The density of a substance is a ________ of the substance
state of matter
chemical property
solution
physical property
30
Oceanic plates are pushed down into the upper mantle in
strike-slip faults
subduction zones
divergent boundaries
convection currrents
31
H
2
O is a compound formed by sharing
electrons
neutrons
ions
protons
32
Properties of matter that do not change a substance into a new substance are ______ properties
atomic
physical
solid
chemical
33
Hydrogen-1 and Hydrogen-2 are ___ of one another
isotopes
ions
conductors
compounds
34
The effect of water on iron
chemical property
physical property
35
Rocks formed by changes in heat and pressure or the presence of hot, watery fluids
igneous rocks
granitic rocks
sedimentary
metamorphic rocks
36
As Earth's plates move apart at some boundaries, they collide at others, forming
mountains and volcanoes
ocean basins
strike-slip faults
mountains, volcanoes and ocean basins
37
_____ are particles without electric charge
protons
neutrons
electrons
atoms
38
Electrically charged atoms are called
ions
molecules
electrons
isotopes
39
A salt crystal is _______in shape
cubic
hexagonal
tetragonal
monoclinic
