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2nd semester review - Earth/space science -6th grade

Total questions: 91

Worksheet time: 1hrs 12mins

Name
Class
Date
1.
All of the following are causes of physical weathering except...
a)
plant growth
b)
wind
c)
acid rain
d)
running water
2.
How does freezing water cause the weathering of rocks?  The freezing water—
a)
keeps the rocks in place
b)
makes the rocks last longer
c)
expands cracks and breaks rocks
d)
causes rocks to fall in landslides
3.
What is mechanical weathering?
a)
Process through which rocks are physically broken into smaller pieces.
b)
Rocks are broken down through chemical changes.
c)
Rocks are worn away from acid in plant roots.
d)
Rocks broken down by machinery.
4.
Chemical weathering
a)
May change the composition of a piece of rock, but definitely changes the size.
b)
Is no different from mechanical weathering in changing rocks.
c)
Is much less important than mechanical weathering because it acts under very few conditions.
d)
May change the size of a piece of rock, but definitely changes the composition.
5.
The process that breaks down rocks and other materials on Earth's surface is called
a)
weathering
b)
erosion
c)
soil conservation
d)
decomposition
6.

What is the process of moving sediments from location to another?

a)

Deposition

b)

Erosion

c)

Weathering

d)

Compaction

7.
What is the small broken down pieces of rock called?
a)
dirt
b)
grime
c)
sediment
d)
popcorn
8.
What force lays down sediment in new locations?
a)
Erosion
b)
Weathering
c)
Deposition
d)
Abrasion
9.
Process that occurs when water repeatedly freezes and thaws. 
a)
Residual soil
b)
Frost wedging
c)
Erosion
d)
Oxidation
10.
What are the two factors that affect the rate at which weathering occurs?
a)
climate and mass of rock
b)
climate and size of rock
c)
type of rock and size of rock
d)
type of rock and climate
11.
Impermeable materials...
a)
have an abundance of pores.
b)
let water in.
c)
have little to no pores.
12.
The ability of a liquid to flow through a substance is:
a)
Porosity
b)
Permeability
13.

Which force pulls everything towards the center of the Earth?

a)

erosion

b)

gravity

c)

mass

d)

deposition

14.
_________________happens when gravity moves sediment downhill.
a)
Weathering only
b)
Mass movement
c)
Erosion only
d)
Gravity
15.
Which is NOT a type of mass movement?
a)
landslide
b)
slump
c)
mudflow
d)
windstorm
16.
A smaller river that feeds into a larger river
a)
estuary
b)
tributary
c)
wetland
d)
ecosystem
17.

the section of a river near an ocean or lake that is fan-shaped is called a

a)

stream

b)

delta

c)

flood plain

d)

meander

18.
The curve of a river
a)
meander 
b)
oxbow
c)
levee
d)
channel
19.
The process by which dry land is transformed into desert like conditions is called: 
a)
deforestation
b)
desertification
c)
evaporation 
d)
demarcation
20.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
21.
What is the definition of CONVECTION
a)
When heat transfers through waves.
b)
When heat transfers from objects that are touching.
c)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
d)
Heat traveling from the sun
22.
You get sunburned due to __________ from the sun.
a)
conduction
b)
convection
c)
radiation
23.
Which layer of the Earth has convection currents that cause tectonic plates to move?
a)
Crust
b)
Mantle
c)
Outer Core
d)
Inner Core
24.
What are the two factors that affect the rate at which weathering occurs?
a)
climate and mass of rock
b)
climate and size of rock
c)
type of rock and size of rock
d)
type of rock and climate
25.
Located at the leading edge of a warm air mass. Brings gentle rain or light snow, followed by warmer, milder weather.  
a)
Warm Front
b)
Cold Front 
c)
Occluded Front 
d)
Stationary Front 
26.
A rapidly moving cold air mass runs into a warm air mass. The cold air slides under the warm air. This is called a(n)  .....
a)
cold front
b)
warm front
c)
stationary front
d)
occluded front
27.
Which type of front is associated with the front not moving in either direction?
a)
Cold
b)
Warm
c)
Stationary
d)
Occluded
28.
In what areas of the world do hurricanes form?
a)
Warm ocean waters
b)
Polar ocean waters
c)
On lakes and rivers
d)
Over the central plains of the U.S
29.

Air masses are classified by two characteristics. What are they?

a)

The density and location

b)

The shape and size

c)

The temperature and humidity

d)

The direction of movement and its location

30.
The cryosphere includes all but
a)
ice
b)
snow
c)
liquid water
d)
permafrost
31.
The atmosphere includes
a)
rocks
b)
air
c)
plants
d)
atoms
32.
The geosphere includes all but
a)
rocks
b)
mountains
c)
lava
d)
plants
33.
The hydrosphere includes
a)
water
b)
ice
c)
dogs
d)
lava
34.
The biosphere includes
a)
living things
b)
rocks
c)
ice
d)
boiling water
35.
What are the two main factors that determine the climate of an area?
a)
precipitation and humidity
b)
temperature and air pressure
c)
wind conditions and humidity
d)
temperature and precipitation
36.
Where you will find the ozone layer.
a)
stratosphere
b)
thermosphere
c)
exosphere
d)
mesosphere
37.
The most common gas in the atmosphere (78%).
a)
Nitrogen
b)
Oxygen
c)
Carbon Dioxide
d)
Trace gases
38.
What is the greenhouse effect?
a)
The warming of a planet due to trapped radiation.
b)
The cooling of Earth due to air pollution.
c)
The heating of a solid, such as a rock.
39.
CFC's once used in many household products contributed to the creation of a(n) ______________.
a)
Acid rain
b)
temperature inversion
c)
smog cloud
d)
hole in the ozone layer
40.
What happens to air pressure as you move upward into the atmosphere?
a)
increases
b)
decreases
c)
stays the same
41.
The layers of the atmosphere are classified according to changes in _________.
a)
altitude
b)
density
c)
composition
d)
temperature
42.
The curving of air to the right in the Northern hemisphere is caused by ___________ and is called the _________ effect.
a)
Earth's rotation...Coriolis
b)
Earth's revolution...Coriolis
c)
Earth's rotation...Doppler
d)
Earth's revolution...Doppler
43.
What galaxy is our solar system in?
a)
Milky way
b)
milking way
c)
Milk way
d)
Milkie Weigh
44.
What is a light year?
a)
The distance light travels in a year.
b)
A number of light bulbs we change in a year
c)
The speed at which light travels
d)
The brightness of the Sun at night time.
45.
Astronomers measure the distances to nearby stars by how background stars appear to move back & forth as the Earth orbits the Sun. This type of measurement is called ______
a)
red shift
b)
polaris
c)
blue shift
d)
parallax
46.
How do the sizes of the inner planets compare to the sizes of the outer planets?
a)
The inner planets are larger.
b)
The outer planets are smaller.
c)
There is no size difference between the inner and outer planets.
d)
The inner planets are smaller.
47.
Types of galaxies include all of the following EXCEPT... 
a)
Spiral
b)
Elliptical 
c)
Irregular
d)
Galactic
48.
What color of star is the hottest?
a)
Blue
b)
Red
c)
Yellow
d)
Orange
49.
What color of star is the coolest?
a)
Red
b)
Yellow
c)
Blue
d)
White
50.
What are stars?
a)
Rocky bodies
b)
Hot exploding balls of gas
c)
5 pointed shapes
d)
Hollywood actors
51.
What do we use to classify the temperature, brightness, and size of stars?
a)
Color
b)
The star's shape
c)
H-R Diagram
52.
When is a star born?
a)
when the nebula starts spinning
b)
nuclear fusion starts
c)
when gas and dust starts to contract
d)
when x rays get emitted
53.
It's loops are seen extending from the photosphere. 
a)
Flares
b)
Corona
c)
Prominences
54.
The main elements in a star's composition are _______ and ________.
a)
hydrogen, helium
b)
carbon, helium
c)
hydrogen, iron
d)
helium, dark matter
55.
Which planets are terrestrial planets
a)
Inner planets
b)
Outer planets
c)
Both
d)
Asteroid belt
56.
Which of the following is a common characteristic of outer planets?
a)
have rings
b)
shorter years
c)
terrestrial
d)
less than 5 satellites
57.
What is at the center of the Solar System?
a)
Earth
b)
Moon
c)
Sun
d)
Jupiter
58.
How long does it take for Earth to complete on full rotation?
a)
365 days
b)
23 hours
c)
24 hours
d)
1 month
59.
How long does it take the Earth to make one REVOLUTION around the Sun?
a)
12 hours
b)
24 hours
c)
365 days
d)
29.5 days
60.
What are the reasons for the seasons?
a)
Earth's tilt and rotation.
b)
Earth's rotation and revolution.
c)
Earth's tilt and revolution.
d)
Earth's tilt and resolution
61.
The average distance between the earth and the sun is the 
a)
astronomical unit 
b)
Light year
62.
Pluto is a _____ planet.
a)
dwarf
b)
small
c)
large
63.

large round pits on the moon created by meteoroid impacts

a)

craters

b)

highlands

c)

mare

d)

maria

64.
For a solar eclipse to occur, what has to happen?
a)
The sun must be directly between Earth and the moon.
b)
The moon must be directly between Earth and the Sun.
65.
When a total lunar eclipse happens, the Moon is in the Earth's...
a)
penumbra
b)
umbra
66.
What causes day and night on Earth?
a)
the tilt of Earth's axis
b)
Earth's revolution around the sun
c)
the moon
d)
Earth's rotation
67.
What has the greatest influence on tides?
a)
gravitational pull of the sun
b)
gravitational pull of the moon
c)
gravitational pull of the Earth
d)
gravitational pull of other planets
68.
What determines which phase of the moon you see?
a)
where you are on Earth
b)
how much of the sunlit side faces Earth
c)
how much of the moon is lit by the sun
d)
how much of the moon is in the sky
69.
How does the amount of the lit side of the moon that we see change as the moon goes from new to full?
a)
it stays the same
b)
it increases
c)
it decreases
d)
it depends
70.
The __________ has planets, moons, comets, and asteroids.
a)
solar system
b)
earth
c)
rotation
d)
United States
71.
One of the main differences between the outer and inner planets is __________.
a)
The inner planets all have water
b)
the inner planets are much bigger than the outer planets
c)
the outer planets are gas planets
d)
the outer planets have rings, and the inner planets don't
72.
Made of Ice and Rock Can Be Found Orbiting All the Outer Planets
a)
Comet
b)
Rings
c)
Asteroid Belt
d)
Asteroid
73.

Neap tides happen during ___________ and _____________ moons.

a)

full / new

b)

1st quarter / 3rd quarter

c)

waxing gibbous / waning gibbous

d)

waxing crescent / waning crescent

74.
Newton's third law of motion  states that for every action there is an 
a)
eventual and opposing action
b)
unknown reaction
c)
equal and opposite reaction
d)
explosive action
75.
What country was the first to use rockets in ancient times?
a)
Russia
b)
United States 
c)
Korea
d)
China
76.

Which model of the solar system has the sun in the center with all of the planets orbiting it?

a)

heliocentric

b)

geocentric

77.

People used to think that Earth was the center of the solar system- they thought everything orbited around the Earth. They called this the _________ model.

a)

Geocentric

b)

Heliocentric

78.

Which of the following correctly lists the order of the Sun's inner layers and atmosphere layers from inside to out?

a)

core, photosphere, convective zone, radiative zone, corona, chromosphere

b)

radiative zone, convective zone, core, photosphere, chromosphere, corona

c)

core, radiative zone, convective zone, photosphere, chromosphere, corona

d)

core, radiative zone, convective zone, corona, chromosphere, photosphere

79.
A stream of particles that extends outward from the sun's corona is called
a)
A sunspot
b)
Chromosphere
c)
Prominence
d)
Solar wind
80.
A meteoroid can be a piece of what?
a)
The Moon or Mars
b)
An asteroid
c)
A comet
d)
All of the above
81.

Plains, plateaus, and mountains are three main types of

a)

projections

b)

elevations

c)

relief

d)

landforms

82.

The energy that produces ocean waves come from

a)

the rise and fall of tides

b)

rivers flowing into the ocean

c)

wind blowing across the water's surface

d)

rock falling into the ocean along the shore

83.

The solar system formed from

a)

an expanding galaxy

b)

a giant cloud of gas and dust

c)

an enormous explosion

d)

a black hole

84.

The absolute brightness of a star depends on its

a)

distance and temperature

b)

size and temperature

c)

color and temperature

d)

distance and color

85.

The temperature of the moon's surface varies greatly from day to night because the moon has

a)

maria

b)

no atmosphere

c)

many craters

d)

highlands

86.

Water vapor enters the atmosphere by what process?

a)

evaporation

b)

condensation

c)

precipitation

d)

humidity

87.

The climate on the leeward side of a mountain differs from that on the windward side mostly in

a)

the strength of the winds

b)

the direction of the winds

c)

the angle of the sunlight

d)

the amount of rainfall

88.

Why does the air have pressure?

a)

the stratosphere is thick

b)

air has mass

c)

wind moves the air

d)

temperatures warm the air

89.

How do local winds differ from global winds?

a)

they are caused by unequal heating within a small area

b)

they are caused by differences in cloud cover

c)

they are due to unequal rainfall

d)

they are not influenced by air masses

90.

What to conditions are required for cloud formation

a)

cooling of the air and evaporation of fog

b)

evaporation of fog and a swirling jet stream

c)

cooling of the air and the presence of particles in the air

d)

evaporation of fog and certain sized water droplets.

91.

Which of the following is NOT an example of the economic impact the space program has had on Florida?

a)

The Kennedy Space Center employees almost 15,000 people

b)

NASA and NASA employees buy products and services from local businesses

c)

The state of Florida pays for the launch of scientific spacecraft from the Kennedy Space Center.

d)

Over a million tourists visit Kennedy Space Center each year.

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