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Final Exam > SCIENCE > Flashcards

SCIENCE Flashcards

1
Q

It may move away from or toward a reference point after a length of time

A

An object in motion

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2
Q

Natural process which brings about changes on Earth’s surface

A

Weathering

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3
Q

Depends on the kind of surfaces that come in contact with each other

A

The amount of frictional force

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4
Q

The rate at which the object moves over a certain distance in a given time

A

The object’s speed

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5
Q

The object will move and change its position if this type of force is applied

A

Unbalanced forces

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6
Q

The negatively charged particles of atoms

A

Electrons

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7
Q

Formalized and published in 1960

A

The standard SI units based on the meter-kilogram-second system (MKS)

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8
Q

Enables the soil to absorb water, thus decreasing the speed and direction of runoff

A

Vegetation cover

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9
Q

Cause the object to start moving, stop moving, or change the direction of its movement

A

When an unbalanced force is experienced by an object

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10
Q

It refers to an agricultural practice of growing different types of crops in the same area over a sequence of years or seasons

A

Crop rotation

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11
Q

Value of deka

A

10

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12
Q

A metal commonly used in electrical wires because of its high electrical conductivity.

A

Copper

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13
Q

The tendency of an object at rest to remain at rest, or an object to stay in motion in a straight line unless an unbalanced force acts on it

A

Inertia

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14
Q

They do not allow light to pass through them

A

Opaque materials

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15
Q

Would produce a very clear image on the surface

A

Specular or regular reflection

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16
Q

Affects the motion of an object

A

Force

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17
Q

Cause a change in motion

A

Unbalanced forces which are unequal in size

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18
Q

Depends on the distance traveled and the length of time traveled

A

Speed

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19
Q

Commonly used as heat conductors

A

Aluminum, silver, iron, and steel

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20
Q

Used to measure distance

A

Meter or kilometer

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21
Q

Constantly changing

A

Earth’s surface

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22
Q

The change in position of an object over time as compared with a reference point

A

Motion

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23
Q

Tiny particles in which heat and electricity moves through

A

Atoms

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24
Q

The ability to allow heat and electricity to flow through objects

A

Conductivity

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25
Q

Used to measure long distances

A

Kilometer

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26
Q

Known to be hard, lustrous or shiny, ductile, and malleable

A

Metals

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27
Q

Depends on the distance or the length by which the object has moved from a reference point, and the length of time through which the change in position happened.

A

Motion

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28
Q

The speed of a moving object in a particular direction

A

Velocity

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29
Q

A flow of electrons

A

Electricity

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30
Q

Value of centi

A

1/100

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31
Q

The prefix added when the length being measured is far or quite distant

A

hecto-, deca- or kilo-

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32
Q

May move down the highland due to gravity

A

Glaciers

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33
Q

Create more friction

A

Rough surfaces

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34
Q

Formed by slightly acidic water

A

Caves

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35
Q

Transmit light when they allow all visible light waves to pass through them

A

Transparent materials

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36
Q

Breaking of rocks and soil down into smaller particles

A

Weathering

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37
Q

Eats up a large amount of vegetation, causing the soil to loosen and leads to erosion

A

Animal grazing

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38
Q

The amount of Earth’s pull on a body

A

Gravity

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39
Q

Conductors of heat because their atoms are compact enough

A

Metals

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40
Q

The standard unit of mass

A

Kilogram (kg)

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41
Q

The prefix added when the length being measured is short

A

milli-, centi-, or deci-

42
Q

Used to measure short distances

A

Meter

43
Q

Pulls weathered rock and soil down slopes

A

Gravity

44
Q

Value of kilo

A

1000

45
Q

Set to change its state of motion

A

The object that receives a push or pull from different forces

46
Q

The standard unit of time

A

Seconds (s)

47
Q

Other units commonly used to express speed

A

kilometers per hour (km/h or kph), feet per second (ft/s), and miles per hour (mi/h or mph)

48
Q

Most widely used system of measurement in the world

A

The Metric System of Measurement

49
Q

The standard unit for time

A

Seconds (s)

50
Q

Value of hecto

A

100

51
Q

Transmit light that is scattered or diffused and cannot be reflected clearly to your eyes

A

Translucent materials

52
Q

It may cause the object to start moving, stop moving, speed up, slow down, or change the direction of its movement

A

Force

53
Q

Give off acids which dissolve the minerals from the rocks and eventually cause them to break

A

Lichens and moss

54
Q

Some lands with steeper slopes erode more soil by water than those with gentle slope

A

Slope of the land surface

55
Q

Breaks down rocks by changing their composition

A

Chemical weathering

56
Q

Push or pull that makes something move

A

Force

57
Q

The average and overall atmospheric condition in a region over a long period of time

A

Climate

58
Q

Changes the sizes and shapes of rocks

A

Physical weathering

59
Q

Most common cause and maybe the most powerful agent of erosion

A

Moving water

60
Q

The material moved by erosion

A

Sediment

61
Q

Planting two different crops of alternate rows of strips

A

Strip cropping

62
Q

Absorbed more when it strikes a dark object

A

Light

63
Q

A number of terraces are cut along the hill slope

A

Terracing

64
Q

Create lesser friction

A

Smooth surfaces

65
Q

A black image when light is blocked by an object

A

Shadow

66
Q

The rate at which it covers a certain distance

A

The speed of a moving object

67
Q

Gravity depends on two things

A

The amount of matter or an object’s mass and the distance of the object from Earth

68
Q

A common reference point for determining motion

A

Earth’s surface

69
Q

When carbon dioxide in the air dissolves in water, carbonic acid is formed. It reacts with rocks like limestone, turning it to calcium bicarbonate that easily dissolves in water

A

Carbonation

70
Q

The process of breaking down rocks by oxygen and water, often giving iron-filled rocks a rusty color

A

Oxidation

71
Q

Occurs when living things like plants and animals cause rocks to break down or change in their composition

A

Biological weathering

72
Q

Value of milli

A

1/1000

73
Q

Based on the metric system

A

International System of Units (SI)

74
Q

Used in transistors, solar cells, and other components of electronic devices because they are also conductors of electricity

A

Water, graphite, plasma, and silicon

75
Q

The upward force that enables objects to float or appear lighter and is present whether an object floats or sinks

A

Buoyancy

76
Q

The standard or SI unit for speed

A

Meters per second (m/s)

77
Q

Occurs when acidic water causes the rocks to break, producing clay and soluble salts

A

Hydrolysis

78
Q

The measure of gravity

A

The nearer an object is to Earth, the greater is the gravitational pull, the farther an object is from Earth, the lesser is the gravitational pull

79
Q

Forms of energy that flow through the particles of a material

A

Heat and electricity

80
Q

Forces that cancel each other out when acting together on a single object, do not cause a change in motion

A

Balanced forces

81
Q

Process that transports the weathered particles from one place to another

A

Erosion

82
Q

The way to describe the motion of an object

A

Determining how long it takes to travel, how far it travels, how fast it moves, and what path it follows

83
Q

Materials with dark colors absorb light into heat

A

Heat absorbers

84
Q

Value of deci

A

1/10

85
Q

Can be measured using a ruler, a meterstick, and a tape measure

A

Distance or length

86
Q

Can conduct electricity because they have atoms that easily give up electrons, allowing electricity to move throughout the structure

A

Metals

87
Q

The agents of withering

A

Plants, animals, water, wind, snow or frost, and changes in temperature

88
Q

Effects of soil erosion

A

Shortage of food supply, change of landforms, and flooding and siltation

89
Q

Farmers do not plow the field or disturb the topsoil

A

No-till or minimum-till practice

90
Q

Some types of soil erode easily compared to others

A

Character or type of soil

91
Q

They conduct very less heat and do not allow electricity to flow

A

Heat or thermal insulators

92
Q

Light that travels to our eyes

A

Reflected light

93
Q

Speed with direction

A

Velocity

94
Q

The force that works against motion when surfaces rub against each other

A

Friction

95
Q

An object’s exact location

A

An object’s position

96
Q

Farmlands that are cultivated in hilly areas use ______ to prevent soil erosion

A

Contour farming

97
Q

The part of the soil where the plants grow

A

Topsoil

98
Q

The standard unit of distance or length

A

Meter (m)

99
Q

The standard SI unit for distance

A

Meters (m)

100
Q

Defined as the distance of an object travels divided by the time it takes the object to travel that distance

A

The speed of an object

101
Q

The topsoil contains ___

A

Humus

102
Q

The eroded materials are gradually transported in another location such as the bottom of the stream.

A

Deposition

Final Exam (8 decks)

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