SCIENCE

Question 1

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

Answer 1

An object in motion

Question 2

Natural process which brings about changes on Earth’s surface

Answer 2

Weathering

Question 3

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

Answer 3

The amount of frictional force

Question 4

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

Answer 4

The object’s speed

Question 5

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

Answer 5

Unbalanced forces

Question 6

The negatively charged particles of atoms

Answer 6

Electrons

Question 7

Formalized and published in 1960

Answer 7

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

Question 8

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

Answer 8

Vegetation cover

Question 9

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

Answer 9

When an unbalanced force is experienced by an object

Question 10

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

Answer 10

Crop rotation

Question 11

Value of deka

Answer 11

10

Question 12

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

Answer 12

Copper

Question 13

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

Answer 13

Inertia

Question 14

They do not allow light to pass through them

Answer 14

Opaque materials

Question 15

Would produce a very clear image on the surface

Answer 15

Specular or regular reflection

Question 16

Affects the motion of an object

Answer 16

Force

Question 17

Cause a change in motion

Answer 17

Unbalanced forces which are unequal in size

Question 18

Depends on the distance traveled and the length of time traveled

Answer 18

Speed

Question 19

Commonly used as heat conductors

Answer 19

Aluminum, silver, iron, and steel

Question 20

Used to measure distance

Answer 20

Meter or kilometer

Question 21

Constantly changing

Answer 21

Earth’s surface

Question 22

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

Answer 22

Motion

Question 23

Tiny particles in which heat and electricity moves through

Answer 23

Atoms

Question 24

The ability to allow heat and electricity to flow through objects

Answer 24

Conductivity

Question 25

Used to measure long distances

Answer 25

Kilometer

Question 26

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

Answer 26

Metals

Question 27

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.

Answer 27

Motion

Question 28

The speed of a moving object in a particular direction

Answer 28

Velocity

Question 29

A flow of electrons

Answer 29

Electricity

Question 30

Value of centi

Answer 30

1/100

Question 31

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

Answer 31

hecto-, deca- or kilo-

Question 32

May move down the highland due to gravity

Answer 32

Glaciers

Question 33

Create more friction

Answer 33

Rough surfaces

Question 34

Formed by slightly acidic water

Answer 34

Caves

Question 35

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

Answer 35

Transparent materials

Question 36

Breaking of rocks and soil down into smaller particles

Answer 36

Weathering

Question 37

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

Answer 37

Animal grazing

Question 38

The amount of Earth's pull on a body

Answer 38

Gravity

Question 39

Conductors of heat because their atoms are compact enough

Answer 39

Metals

Question 40

The standard unit of mass

Answer 40

Kilogram (kg)

Question 41

The prefix added when the length being measured is short

Answer 41

milli-, centi-, or deci-

Question 42

Used to measure short distances

Answer 42

Meter

Question 43

Pulls weathered rock and soil down slopes

Answer 43

Gravity

Question 44

Value of kilo

Answer 44

1000

Question 45

Set to change its state of motion

Answer 45

The object that receives a push or pull from different forces

Question 46

The standard unit of time

Answer 46

Seconds (s)

Question 47

Other units commonly used to express speed

Answer 47

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

Question 48

Most widely used system of measurement in the world

Answer 48

The Metric System of Measurement

Question 49

The standard unit for time

Answer 49

Seconds (s)

Question 50

Value of hecto

Answer 50

100

Question 51

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

Answer 51

Translucent materials

Question 52

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

Answer 52

Force

Question 53

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

Answer 53

Lichens and moss

Question 54

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

Answer 54

Slope of the land surface

Question 55

Breaks down rocks by changing their composition

Answer 55

Chemical weathering

Question 56

Push or pull that makes something move

Answer 56

Force

Question 57

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

Answer 57

Climate

Question 58

Changes the sizes and shapes of rocks

Answer 58

Physical weathering

Question 59

Most common cause and maybe the most powerful agent of erosion

Answer 59

Moving water

Question 60

The material moved by erosion

Answer 60

Sediment

Question 61

Planting two different crops of alternate rows of strips

Answer 61

Strip cropping

Question 62

Absorbed more when it strikes a dark object

Answer 62

Light

Question 63

A number of terraces are cut along the hill slope

Answer 63

Terracing

Question 64

Create lesser friction

Answer 64

Smooth surfaces

Question 65

A black image when light is blocked by an object

Answer 65

Shadow

Question 66

The rate at which it covers a certain distance

Answer 66

The speed of a moving object

Question 67

Gravity depends on two things

Answer 67

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

Question 68

A common reference point for determining motion

Answer 68

Earth's surface

Question 69

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

Answer 69

Carbonation

Question 70

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

Answer 70

Oxidation

Question 71

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

Answer 71

Biological weathering

Question 72

Value of milli

Answer 72

1/1000

Question 73

Based on the metric system

Answer 73

International System of Units (SI)

Question 74

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

Answer 74

Water, graphite, plasma, and silicon

Question 75

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

Answer 75

Buoyancy

Question 76

The standard or SI unit for speed

Answer 76

Meters per second (m/s)

Question 77

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

Answer 77

Hydrolysis

Question 78

The measure of gravity

Answer 78

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

Question 79

Forms of energy that flow through the particles of a material

Answer 79

Heat and electricity

Question 80

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

Answer 80

Balanced forces

Question 81

Process that transports the weathered particles from one place to another

Answer 81

Erosion

Question 82

The way to describe the motion of an object

Answer 82

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

Question 83

Materials with dark colors absorb light into heat

Answer 83

Heat absorbers

Question 84

Value of deci

Answer 84

1/10

Question 85

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

Answer 85

Distance or length

Question 86

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

Answer 86

Metals

Question 87

The agents of withering

Answer 87

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

Question 88

Effects of soil erosion

Answer 88

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

Question 89

Farmers do not plow the field or disturb the topsoil

Answer 89

No-till or minimum-till practice

Question 90

Some types of soil erode easily compared to others

Answer 90

Character or type of soil

Question 91

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

Answer 91

Heat or thermal insulators

Question 92

Light that travels to our eyes

Answer 92

Reflected light

Question 93

Speed with direction

Answer 93

Velocity

Question 94

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

Answer 94

Friction

Question 95

An object's exact location

Answer 95

An object's position

Question 96

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

Answer 96

Contour farming

Question 97

The part of the soil where the plants grow

Answer 97

Topsoil

Question 98

The standard unit of distance or length

Answer 98

Meter (m)

Question 99

The standard SI unit for distance

Answer 99

Meters (m)

Question 100

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

Answer 100

The speed of an object

Question 101

The topsoil contains ___

Answer 101

Humus

Question 102

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

Answer 102

Deposition