Answer Key ( Week 1 – August 24-28)
Analysis Activity 1.
Q1.
Oceanic Plates Continental Plates
1 Antarctic Plate 1. Eurasian Plate
2. Juan de Fuca 2. Arabian Plate
3. Pacific Plate 3. South American Plate
4. Cocos Plate 4. Australian Plate
5. Scotia Plate 5. African Plate
6. Nazca Plate 6. North American Plate
7. Carribean Plate 7. Indian Plate
Q2. The Philippines is an oceanic plate.
Q3. Major tectonic plates around the Philippines; Eurasian Plate Australian Plate and Pacific Plate
Q4. The Earth’s lithosphere is broken into pieces. These pieces form the tectonic plates.
Assessment:
A.
1. North American Plate
2. South American Plate
3. Eurasian Plate
4. Australian Plate
5. Eurasian Plate
6 Antarctic Plate
7. African Plate
B. Arabian Plate, African Plate, Australian Plate, Indian Plate, North American Plate, South American
Plate, Antarctic Plate, Pacific Plate……
II.
1B 2. B 3. A 4.C 5.D
Q5. The types of rocks are; igneous, sedimentary and metamorphic rocks
Q6. Granite rocks comprise Continental crust, Basalt rocks comprise oceanic crust
Q7. The oceanic crust is denser than the continental crust.
Assessment:
Rock Cycle
1. Cooling and Crystallization
2. Weathering and erosion
3 .Cementing and compacting
4. Heating
5. Melting
Answers to the blanks
Igneous Rocks.....
Crytals ……… melted rock
Intrusive ……….. as magma
Lava..
B. Crossword Puzzle:
Across Down
1. basalt 2. metamorphic
3. sedimentary 4. Extrusive
5. igneous 6. Magma
9. granite 7. Intrusive
10. limestone 8.strata
1. Graph
Chart Title
8
7.8
Earthquake Magnitude
7.6
7.4
7.2
6.8
6.6
1968 1976 1990 1994 2013
Year of Occurrence
2. The strongest earthquake based on the graph is in Moro Gulf in Mindanao in the year 1976.
3. The threats earthquakes bring are death , destruction of the environment and properties.
4. Answers may vary
Assessment; ( Earthquakes)
1. c
2. b
3. a
4. b
5. b
Activity 2. Find the Center:
Recording station Time difference in the arrival Distance of epicenter from
time of P-wave and S-wave the station (Km)
( Seconds)
Batangas 44.8 560
Puerto Princesa 32 400
Davao 38.4 480
How to compute the distance on the map: scale: 1.5 cm = 200 km. Set the drawing compass to the
following computed distances on the map.
560 km ( 1.5 cm/200km) = 4.2 cm
400 km (1.5 cm/200km) = 3 cm
480 km ( 1.5 cm/200km) = 3.6 cm
8 The epicenter is in Negros
9. There is confusion on the location of the epicenter, because the two circles will intersect at two
locations.
10. 9,000 km
11.The importance of determining the epicenter of an earthquake is to pinpoint which fault lines are
active.Less active fault lines store great potential energy that could cause major earthquakes.
Assessment:
1.D 4.B
2.B 5.C
3.D
August 31-September 4,2020
1. Earthquake epicenters are not randomly distributed on earth, they tend to be concentrated in narrow
zones.
2. They are mostly located near the edges of continents, some in mid continents others in oceans.
3. There are no earthquakes in the large part of the Pacific ocean, Eastern portion of North and South
America, Western Africa, Northernmost Asia.
4. It is important to identify areas prone to earthquakes so that necessary precautions could be done if
you’re living in one of those areas.
Assessment
1. A 4. C
2. D 5. B
3. D
Analysis:
1. The largest and the most active volcano are found in Hawaii.
2. Mayon volcano belongs to the most active volcano in the world , while Taal volcano is the smallest
volcano in the world.
3. Direct hazards; ( very hot mixture of gases- destroy anything on the way, pyroclastic fall – collapse
roofs, lahar flow- destroys anything within the channe l) Indirect Hazards -Respiration problems for
some individuals, Significant climate cooling and famine,Damage to aircraft etc.
4. The benefits are; fertile soil, produce geothermal energy and source of metallic minerals
Assessment:
Crossword Puzzle:
Across: Down:
2. Crater 1. Magma
4. Seismic Waves 3. Lava
6. Seismograph 4. Shield
7. Dormant 5. Cone
Analysis:
1.Volcanoes are not randomly distributed on earth. Majority of them are found along the edges of the
continents.
2. They are located near the edges of the continents, particularly in the western coast of North and
South America, East and South East Asia.
3.Answer may vary. Eastern portion of North and South America, Western Africa, Northern most Asia.
4. The location of the majority of earthquake epicenters and volcanoes are both situated in the same
area.
Assessment:
1. D 2. B 3. D 4. B 5.B
MOUNTAINS
Analysis:
1 Mountain ranges are not randomly distributed on earth.
2 Mountains are located in areas where volcanoes and earthquake epicenters are also located.
3. Mountain ranges are found in places where volcanoes and earthquake epicenters are also located.
4. The presence of volcanoes, earthquake epicenters and mountain ranges mark the boundary of a
tectonic plate.
5. Geologic activities such as seismicity , volcanism and mountain formation are the basis of scientists in
dividing the earth’s lithosphere.
Labelling:
Left side: 1. Rockies Right side: 3. Alps
2. Andes 4. Himalayas
3rd Week ( September 07-11,2020)
Activity 1:
I.
1. Folded 2. Volcanic 3. Dome 4. Fault-block
II. Example of:
Folded mountains: Atlas, Himalayas, Rockies ….
Volcanic mountains: Mayon, Taal….
Dome: Adirondack mountain of New York and Black Hills Mountain of South Dakota
Fault-Block Mountain: Part of the Himalayas, part of Andes, Alps…
Analysis:
1. The types of mountains are: Volcanic, Folded, Dome and Fault-block mountain.
2. The processes involved in mountain building are: folding, faulting, volcanism and magma
intrusion.
3. Mountain building is related to plate tectonics because mountain formation is a result
when plates collide with another plate.
4. The mountains provide habitat to billions of plants, animals and human beings. They are
also sources of fresh water, food and renewable energy.
5.
Assessment
A. RIGHT SIDE: 1. RANGE
2. PEAK OR SUMMIT
3. MOUNTAIN
4. VOLCANIC MOUNTAIN
5. DOME MOUNTAIN
6. PLATEAU MOUNTAIN
B. 1. A 2. B 3. C 4. D 5.D
Activity 7 : Mountains High and Trenches Low
Earth’s feature From To Height or Depth Rank Amount
of Difference
Mt. Everest 0 + 8,800 8,800 meters high 2
Mauna Kea -4,000 + 6,000 10,000 meters high 1
Mariana Trench -4,000 - 11,000 7,000 meters deep 3
Monterey Canyon 0 3,600 3,600 meters deep 5
Grand Canyon + 2,000 + 400 1,600 meters deep 9
Waimea Canyon + 1,000 0 1,000 meters deep 10
Mid Atlantic Ridge -5,000 -2,500 2,500 meters high 8
Lo,ihi Seamount -4,000 -1,000 3,000 meters high 7
Mc Donald Seamount -4,000 0 4,000 meters high 4
Continental Shelf 0 -500 500 meters deep 11
Continental Slope -500 -4,000 3,500 meters difference 6
Abyssal Plain -3,900 -4,100 200 meters difference 12
Analysis:
1.
3. Mt. Everest
4. Mauna Kea
5. The topographic features of the land and the ocean are almost the same. Mountains and
trenches form in the ocean depths may be as large or even larger than those we see on land.
Underwater topography is created by tectonic and volcanic forces, where as continental
topography is created by both tectonic and volcanic forces as well as effects of weathering and
erosion by wind, water and glaciers.
Assessment;
Labelling:
Left to Right
1. Continental shelf 5. Magma
2. Continental slope 6. Oceanic mountain
3. Continental rise 7. Trench
4. Abyssal Plain
Summative: Competency 1.
I.
1. C 6. C
2. B 7. A
3. D 8. C
4. A 9. C
5 .C 10 A
II. Matching Type:
1.F 2. C 3. D 4. A 5.B
4th Week (September 14 – 18, 2020)
Activity 8: The Moves
A. Convergent
B. Transform Fault
C. Divergent
Similarities Differences
1. Formation of geologic features 1. process that occur between the plates
2. each plate is rigid section of the crust 2. the way the plates move
3. each plate is marked by earthquakes
Activity 8 B
1. divergent
2. convergent
3. divergent
4 .divergent
5 .divergent
Analysis:
1. The tectonic plate boundaries are classified based on the direction of movement.
2. Convergent – plates move towards each other or collision of plates
Divergent – plates move away from each other
Transform – plates slide against each other
Assessment:
1. B 2. A 3. C 4. B 5. D
September 15-16,2020 TMLHT
1. Jumbled letters
A. OCEANIC PLATE
B. CONTINENTAL PLATE
C. OCEANIC
D. SUBDUCTION
E. NO
September 17,2020 TMLHT
What is Happening at Surigao……
1.
PSP PMB
2. The possible threats posed by movement of tectonic plates are; landslides, rock falls and
liquefaction.
3. The possible survival techniques are preparedness, do the duck, cover and hold, heavy
furnitures should be strapped to the walls and appliances should be secured.
Assessment:
1. Convergent
2. North America
3. Eurasian Plate
4. Divergent
5. Divergent
Direction of Motion Type of Boundary Example
Movement
Two plates moving Divergent African plate and South
apart from each other American plate or
answer may vary based
on the map
Two plates come Convergent Eurasian plate and
together, one sliding Philippine plate or
under the other or answer may vary based
both are rising up. on map
Two plates slide past Transform Fault San Andreas Fault
Boundary
Each other
Analysis:
1 Convergent – Oceanic and Oceanic
2 Divergent – Continental and Continental
3 Convergent – Oceanic and Continental
4 Convergent – Continental and Continental
5 Divergent – Oceanic and Oceanic
Assessment:
1. slide past
2. away
3.toward
4. subduction
5 .Mid- Ocean Ridge
Summative Test: Competency 2: Types of Plate Boundaries
1C 8B 14 – 16 Convergent, Divergent and Transform Fault
2A 9D 17 – 18 Mountain, volcano and rift valley
3A 10 B 19 – 20 Mid- ocean ridge, trench, continental slope
4D 11 A Continental shelf, Abyssal plain and sea mount
5A 12 B
6A 13 B
7C
Prepared by:
FIDELA D. DOROON
Teacher
