8th Grade Science Test 6 (Semester Exam)

Question 1

What device has an open tube that is dropped to the sea floor to allow its weight to puncture sediment and bring up samp

Accepted Answer

gravity corer

Question 2

What term describes a fossil that extends through multiple strata?

Accepted Answer

polystrate fossil

Question 3

The two main factors that determine the density of seawater and temperature are

Accepted Answer

salinity

Question 4

Which of the following was thought to be a missing link in man's evolution but was later found to be the remains human

Accepted Answer

Cro-Magnon man

Question 5

What is any area of the sea that exceeds 6000 m in depth called?

Accepted Answer

hadal zone

Question 6

The mass of foaming water formed when waves wash up onto a beach is the

Accepted Answer

surf

Question 7

What type of fault occurs when rocks on one side of a fault are shoved on top of the rocks on the other side of the faul

Accepted Answer

thrust fault

Question 8

What is a wave that grows taller and steeper as it travels to shore and topples forward with a white crest called?

Accepted Answer

breaker

Question 9

What oceanographic tool is a highly maneuverable robot linked to a support ship by cables

Accepted Answer

ROV

Question 10

What are large holes formed when huge chunks of melting glacial ice lodge in washed-out sediments?

Accepted Answer

kettles

Question 11

What are the deep cracks or fissures that develop on the surface of a glacier?

Accepted Answer

crevasses

Question 12

What are the circular paths that ocean currents move in called?

Accepted Answer

gyres

Question 13

Fossils used by evolutionists to date rock layers are called index fossils

Accepted Answer

true

Question 14

What is the top layer of soil, which contains most of the organic substances and nutrients called?

Accepted Answer

topsoil

Question 15

In an experiment, a variable observed to determine the results is a controlled variable

Accepted Answer

false; dependent

Question 16

What idea attempts to reconcile the Bible and evolution claiming that God used evolution as the method of creation?

Accepted Answer

theistic evolution

Question 17

What are large waves created by underwater disturbances called?

Accepted Answer

tsunamis

Question 18

The material carried by a stream is its

Accepted Answer

load

Question 19

sound waves traveling in the lower-density layer hit boundary at a shallow angle/why can submarines avoid being detected

Accepted Answer

sound waves prouduced by surface ships reflected off the thermocline

Question 20

What is the likely reason why Newport News is warmer than Santa Cruz during the summer?

Accepted Answer

California Current cools Santa Cruz

Question 21

What is the process of modifying a smooth slope into a series of level stair-like steps to prevent erosion?

Accepted Answer

terracing

Question 22

Which of the following is supposedly a missing link between amphibians and reptiles?

Accepted Answer

Seymouria

Question 23

What device do oceanographers use to measure the temperature at different levels and report them back to a surface ship?

Accepted Answer

expendable bathythermograph

Question 24

What is the deepest known point in the sea?

Accepted Answer

Challenger Deep

Question 25

What is the main factor that affects the color of the oceans?

Accepted Answer

natural color

Question 26

What type of dune looks like a pyramid with several out-reaching arms?

Accepted Answer

star dune

Question 27

what is an upward-flowing current that occurs when a land breeze pushes surface water away from the coast?

Accepted Answer

upwelling

Question 28

Hills that form when advancing glaciers overrun old piles of till are called drumlins

Accepted Answer

true

Question 29

What substance makes up most of the salt in the oceans?

Accepted Answer

sodium chloride

Question 30

The Nile River in known to be fertile, why would the are around the river's mouth be the most fruitful part of the river

Accepted Answer

the area is formed by deposits of minerals and sediments

Question 31

A person is walking on the beach at night by the light of a full moon. Is it a spring tide or neap tide...How do you kno

Accepted Answer

spring tide; moon earth and sun in line

Question 32

What is the largest group of minerals, which composes over 90% of the earth's crust?

Accepted Answer

silicates

Question 33

What oceanographic tool charts currents far beneath the surface and sends back accurate measurements

Accepted Answer

profiling float

Question 34

The idea that understanding modern geological processes is the key to understanding earth's g. history-neo-catastrophism

Accepted Answer

false; uniformitarianism

Question 35

What type of current is made of seawater mixed with mud or silt and can erode the ocean floor to produce submarine canyo

Accepted Answer

turbidity current

Question 36

What gemstone consists of corundum with traces of iron or titanium that give it a distinctive blue color?

Accepted Answer

sapphire

Question 37

What idea states that the fittest and strongest organisms are most likely to survive and reproduce?

Accepted Answer

natural selection

Question 38

Rocks formed when other types of rocks are "cooked" by heat and pressure are called _____ rocks

Accepted Answer

metamorphic

Question 39

What type of volcano is made of alternating layers of lava and ash?

Accepted Answer

composite volcano

Question 40

What is the main agent of chemical weathering?

Accepted Answer

water

Question 41

What is the scientific term for the volume of the portion of the skull that includes the brain?

Accepted Answer

Cranial Capacity

Question 42

The way light is reflected from the surface of a mineral is called cleavage

Accepted Answer

false; luster

Question 43

What type of tide occurs when there is one high tide and one low tide each day?

Accepted Answer

dirurnal (tide)

Question 44

What method of erosion prevention involves planting alternating strips of different types of crops?

Accepted Answer

strip-cropping

Question 45

Based on biblical teachings, what event was probably directly responsible for laying down most of sedimentary rock layer

Accepted Answer

Flood

Question 46

Iceland known for its many hot springs and volcanoesWhy would this be expected based onlocation on the Mid-Atlantic Ridg

Accepted Answer

plates are spreading apart, magma is closer to the surface

Question 47

What method of measuring an earthquake's strength is based on earthquake's effects on people and structures?

Accepted Answer

modified Mercalli scale

Question 48

What is a circular coral-reef island that grows around an underwater volcano?

Accepted Answer

atoll

Question 49

The coelacanth is a fish that shows practically no difference between fossils and living specimens. problem for evolutio

Accepted Answer

should have evolved at the same rate

Question 50

What is a huge, muddy valley that cuts into the deep ocean floor?

Accepted Answer

trench

Question 51

What is the very slow downslope movement of soil and rock fragments?

Accepted Answer

soil creep

Question 52

A submersible consisting of a crew compartment suspended from a floats is called a bathyscaphe

Accepted Answer

true

Question 53

The dangerous currents formed when large amounts of water from waves surge out to sea through break in sandbar-undertows

Accepted Answer

false; rip currents

Question 54

What are weaker earthquakes that often follow an earthquake at frequent intervals for days or months?

Accepted Answer

aftershocks

Question 55

What type of weathering involves the breaking or peeling away of rock into layers?

Accepted Answer

exfoliation

Question 56

What term refers to a fossil organism found in strata that are supposedly too old or too young to contain that organism?

Accepted Answer

anomaly

Question 57

What technique do evolutionists use to assign supposedly exact ages to rocks and fossils?

Accepted Answer

radiometric dating

Question 58

Why can icebergs float in seawater?

Accepted Answer

more dense than seawater

Question 59

The middle layer of the earth, between the crust and core, is the

Accepted Answer

mantle

Question 60

The idea that the natural laws in operation today have existed throughout Earth's history is the principle of

Accepted Answer

uniformity

Question 61

What type of rock consists of smooth pebbles embedded in hardened sand or clay?

Accepted Answer

conglomerate rock

Question 62

Oceanographers usually measure hydrostatic pressure in the metric unit kilopascals

Accepted Answer

true

Question 63

What type of underwater valley gives mid-ocean ridges the appearance of having twin mountain ranges?

Accepted Answer

rift

Question 64

What are regions of the earth's surface where limestone is exposed and abundant?

Accepted Answer

karst regions

8th Grade Science Test 6 (Semester Exam)

Questions 70

8th Grade Science Test 6 (Semester Exam)

Questions 70