Divergent Plate Boundaries

1. Welcome!
Science 10
FLEX Camiguin
Prepared by:
Jelannie R. Arnol
1

2. 2
Whiteboard Review Rules
1. Read the question and write your answer on your
whiteboard.
2. You may use your notes, not your other classmates
to answer the question.
3. Do not show your board until I say so.
4. Ready? Let’s go!

3. “
Question #1:
At convergent boundaries, Earth’s plates are
_______:
A. Not moving.
B. Moving towards each other.
C. Moving away from each other.
D. Being created.
3

4. ◍ Question #1 Answer:
B. Moving towards each other.
Convergence of the Nazca and South American Plates
https://pubs.usgs.gov/publications/text/Nazca.html

5. “
◍ Question #2:
When two plates collide, the heavier of
the two is pulled under the lighter plate
in a process called ______:
5

6. ◍ Question #2 Answer:
Subduction!
https://pubs.usgs.gov/gip/dynamic/graphics/Fig21oceancont.gif

7. “
◍ Question #3:
What are the three types of Convergent
Plate Boundaries found on Earth?
7

8. “
◍ Question #3 Answer:
◍ Oceanic-Continental Convergence
◍ Oceanic-Oceanic Convergence
◍ Continental-Continental
Convergence
8

9. https://pubs.usgs.gov/gip/dynamic/understanding.html#anchor15039288

10. “
◍ Question #4 :
What type of Convergent Plate boundary where
in one of the plates such as oceanic crust and
Lithospheric mantle is pushed, or subducted,
under the other forming a subduction zone
10

11. “
◍ Question #4:
Oceanic-Oceanic Convergent Plate Boundary
11

12. “
◍ Question #5:
It is produced when two tectonic plates colliding
towards each other.
12

13. “
◍ Question #5 Answer:
Convergent Plate Boundaries
13

14. Divergent Plate
Boundaries

15. Today’s Learning Objectives:
◍ Explain Divergent Boundaries and their
features.
◍ Identify the two types of divergent plate
boundaries
◍ Determine the movement of the two types
of divergent plate
15

16. Divergent
boundaries
◍ where plates
separate and move
in opposite
directions, allowing
new lithosphere to
form from upwelling
magma.
16
◍ This either occurs at
mid-ocean ridges
(the so-called
seafloor spreading)
or at rifted
continental margins.

17. 1.
Transition headline
Let’s start with the first set of slides
17

18. 1.
Transition headline
Let’s start with the first set of slides
18
Along these
boundaries ,
earthquakes are
common &
magma ( molten
rock) rises from
the Earth’s
mantle to the
surface,
solidifying to
create new
oceanic crust.

19. Questions
◍ The motion
of divergent
plate
boundary is
spreading.
◍ Volcanic
activity is
present in
divergent
boundary.
◍ Oceanic
lithosphere is
formed in
divergent
plate
boundary.
19
(Seafloor
Spreading)

20. 20
Ridge
Lithosphere
Asthenosphere

21. Two Types of Divergent
Plate Boundaries
21
◍ Oceanic-Oceanic Plates ◍ Continental-Continental
Plates

22. Divergent Boundaries –
Oceanic Plates
◍ Oceanic ridges are the
result or rising convection
currents that lifts the
lithosphere.
22

23. Divergent Boundaries –
Continental Plates
◍ Continental rifts are the
result of the convection
forces inside the Earth
arching the plate upwards
and fracturing it.
23

24. 24
Divergent boundaries occur where two oceanic
plates move away from one another, this is
where seafloor spreading takes place the most
common example is the mid-ocean ridge.
Fig.1.1. Oceanic- oceanic Fig.1.2. Continental - continental

25. What is being produced from the types
of divergent plate boundaries shown
below?
25
Oceanic –oceanic Continental- continental
Mid-Atlantic ocean ridge
Volcanic activity
Shallow earthquake
faulted valleys - rift
valleys

26. What causes the motion in the two types of
divergent plate boundaries ?
Divergent boundaries occur along spreading centers
where plates are moving apart & new crust is created
by magma pushing up from the mantle.
26

27. 27
True/False – Thumbs Up/Thumbs
Down
For each of the following statements,
put your thumb up or down depending
on if it is true or false.
TRUE = THUMBS UP
FALSE = THUMBS DOWN

28. 28
True/False – Thumbs Up/Thumbs Down
A divergent boundary happens when Earth’s
tectonic plates move away from each other
TRUE = THUMBS UP
FALSE = THUMBS DOWN

29. 29
True/False – Thumbs Up/Thumbs Down
A divergent boundary happens when Earth’s
tectonic plates move away from each other
TRUE = THUMBS UP
FALSE = THUMBS DOWN
1
2
3
4
5

30. 30

31. 31
True/False – Thumbs Up/Thumbs Down
Ocean ridge and volcanic island are also formed
in the divergent plate boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN

32. 32
True/False – Thumbs Up/Thumbs Down
Ocean ridge and volcanic island are also formed
in the divergent plate boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN
1
2
3
4
5

33. 33

34. 34
True/False – Thumbs Up/Thumbs Down
When magma continues to build up, new
mountain ranges are not formed under the sea
creating a mid-ocean ridge.
TRUE = THUMBS UP
FALSE = THUMBS DOWN

35. 35
True/False – Thumbs Up/Thumbs Down
When magma continues to build up, new
mountain ranges are not formed under the sea
creating a mid-ocean ridge.
TRUE = THUMBS UP
FALSE = THUMBS DOWN 1
2
3
4
5

36. 36

37. 37
True/False – Thumbs Up/Thumbs Down
Earthquakes and volcanoes do not occur in a
divergent plate boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN

38. 38
True/False – Thumbs Up/Thumbs Down
Earthquakes and volcanoes do not occur in a
divergent plate boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN
1
2
3
4
5

39. 39

40. 40
True/False – Thumbs Up/Thumbs Down
Volcanic activity is present in divergent boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN

41. 41
True/False – Thumbs Up/Thumbs Down
Volcanic activity is present in divergent boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN 1
2
3
4
5

42. 42

43. 43
True/False – Thumbs Up/Thumbs Down
The motion of divergent plate boundary is
spreading.
TRUE = THUMBS UP
FALSE = THUMBS DOWN

44. 44
True/False – Thumbs Up/Thumbs Down
The motion of divergent plate boundary is
spreading.
TRUE = THUMBS UP
FALSE = THUMBS DOWN 1
2
3
4
5

45. 45

46. 46
True/False – Thumbs Up/Thumbs Down
Plates that are sliding past each other is
characterized by a transform fault boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN

47. 47
True/False – Thumbs Up/Thumbs Down
Plates that are sliding past each other is
characterized by a transform fault boundary.
TRUE = THUMBS UP
FALSE = THUMBS DOWN 1
2
3
4
5

48. 48

49. Thanks!
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Yellow
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Blue
Is the colour of the clear sky and
the deep sea. It is located
between violet and green on the
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Red
Is the color of blood, and
because of this it has historically
been associated with sacrifice,
danger and courage.
Yellow
Is the color of gold, butter and
ripe lemons. In the spectrum of
visible light, yellow is found
between green and orange.
Blue
Is the colour of the clear sky and
the deep sea. It is located
between violet and green on the
optical spectrum.
Red
Is the color of blood, and
because of this it has historically
been associated with sacrifice,
danger and courage.
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DEC
NOV
OCT
SEP
AUG
JUL
JUN
MAY
APR
MAR
FEB
JAN
Blue is the colour of the
clear sky and the deep
sea
Red is the colour of
danger and courage
Black is the color of
ebony and of outer
space
Yellow is the color of
gold, butter and ripe
lemons
White is the color of milk
and fresh snow
Blue is the colour of the
clear sky and the deep
sea
Yellow is the color of
gold, butter and ripe
lemons
White is the color of milk
and fresh snow
Blue is the colour of the
clear sky and the deep
sea
Red is the colour of
danger and courage
Black is the color of
ebony and of outer
space
Yellow is the color
of gold, butter and
ripe lemons

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68
1 3 5
6
4
2
Blue is the colour of the
clear sky and the deep
sea
Red is the colour of
danger and courage
Black is the color of
ebony and of outer
space
Yellow is the color of
gold, butter and ripe
lemons
White is the color of milk
and fresh snow
Blue is the colour of the
clear sky and the deep
sea

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Blue is the colour of the
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WEAKNESSES
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butter and ripe lemons
Black is the color of ebony
and of outer space
OPPORTUNITIES
White is the color of milk
and fresh snow
THREATS

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JOB TITLE
Blue is the colour of the clear
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JOB TITLE
Blue is the colour of the clear
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JOB TITLE
Blue is the colour of the clear
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