SCIENCE 5
Different Weather
Disturbances
QUARTER 4 WEEK 4
D
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1
Match the symbols in column A to Column B.
Observe the illustration below.
What can you say
about the picture?
As the weather disturbance
comes nearer the land, it will
become stronger or weaker.
The Philippine Atmospheric Geophysical
and
Astronomical
Services
Administration or PAGASA
is a government agency responsible not
only for forecasting weather but also for
issuing warning signals to the affected
areas.
The system of warning signals used by
PAGASA is as follows:
Signal 1
A depression is in the area. A wind less
than 60km/hr in velocity is expected in
the next 36hours. People are advised to
listen to the radio for updates. Preschool level classes are suspended.
Signal 2
The depression has developed into a
storm. Winds with a velocity ranging
from 60km/hr to 100 km/hr are expected
to arrive within 24hours at the very least.
This time, classes are suspended at the
elementary and high school levels. The
winds can cause moderate damage in
places that are affected.
Signal 3
A typhoon is coming within 18 hours. Winds
have a velocity above 100 km/hr but below
180 km/hr. Houses made of light materials
may be destroyed and there might be
communication
and
electrical
power
disruptions. Moderate to heavy damage may
be expected. Evacuation of those people
living in low-lying areas is being advised.
Travel by air and seas are not recommended.
Classes at all levels are suspended.
Signal 4
A stronger typhoon is coming within 12
hours. Winds have a velocity above 180
km/hr. This condition is very dangerous
because great damage can happen in
affected places.
Signal 5
A strongest typhoon is coming with 12 hours.
The wind has a velocity above 220 km/hr.
Widespread
damage
to
structure
particularly old and dilapidated homes and
buildings, and most tall trees may be
broken, uprooted or defoliated.
Due to extreme heat, your family plans to
have an outing or swimming somewhere in
Batangas this weekend. However, you
heard on the radio that a strong typhoon is
approaching Central Luzon and will pass
through some areas of Batangas province.
What are you going to do? What will be
your decision?
The system warning signals used by PAGASA are very important to minimize the
destructive effects of the typhoon on
animals, plants, people and community.
DIRECTIONS: Describe the effects of winds
associated with each storm signal. Choose
the signal number inside the box.
1. A typhoon is coming within 18 hours. Winds
have a velocity above 100 km/hr but below
180 km/hr. Houses made of light materials
may be destroyed and there might be
communication
and
electrical
power
disruptions. Moderate to heavy damage may
be expected. Evacuation of those people
living in low-lying areas is being advised.
Travel by air and seas are not recommended.
Classes in all levels are suspended.
2. The depression has developed into a storm.
Winds with a velocity ranging from 60km/hr to
100 km/hr are expected to arrive within
24hours at the very least. This time, classes are
suspended at the elementary and high
school levels. The winds can cause moderate
damage in places that are affected.
3. A stronger typhoon is coming within 12
hours. Winds have a velocity above 180
km/hr. This condition is very dangerous
because great damage can happen in
affected places.
4. A depression is in the area. Winds less than
60km/hr in velocity are expected in the next
36hours. People are advised to listen to the
radio for updates. Preschool level classes are
suspended.
5. A strongest typhoon is coming in 12 hours.
Winds have a velocity above 220 km/hr.
Widespread
damage
to
structures
particularly old and dilapidated homes and
buildings, and most tall trees may be
broken, uprooted or defoliated.
5 WAYS TO BE
SAFE DURING
TYPHOON
SCIENCE 5
Different Weather
Disturbances
QUARTER 4 WEEK 4
D
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2
Look at the picture:
What do you think are the reasons
why these happened?
Weather
disturbances
are
devastating.
It can cause
damage to our life and
properties
Typhoons affect human lives and activities.
Classes and work in the offices are suspended
during heavy typhoons.
Flooding can cause people to drown, houses
to be completely destroyed, property to be
swept Land, sea and air transportations are
suspended
because
streets
become
impassable because of flooding, storm surges
may occur in the sea and possible turbulence
in the air.
Mudslides and power outages are common.
Food shortages, a lack of access to adequate
medical care and supplies, and restricted
access to major highways and cities can
worsen the problem
caused by a typhoon
The effects of a typhoon on humans can be
significant and varied. Here are some of the
impacts:
1. Physical Injuries: Strong winds and heavy
rain can cause physical injuries, such as
debris blocking roads and trees falling. It can
also lead to people being injured.
2. Casualties: In severe typhoons, there can
be fatalities due to collapsed houses or other
structures, flooding, or other accidents.
3. Displacement: Severe typhoons can force
people to evacuate or leave their homes
and communities for safer areas.
4. Emotional and Psychological Impact:
Events related to typhoons, such as loss of
homes or property, trauma for those
affected, and loss of loved ones, can lead to
significant stress and depression.
5. Disruption of Services: Typhoons can cause
power outages, water shortages, and other
disruptions to essential services, making daily
life difficult for people.
6. Health Risks: Flooding from typhoons can
lead to the spread of diseases such as
leptospirosis and other waterborne diseases.
Lack of electricity and clean water can also
pose health risks.
7. Economic Impact: Typhoons that cause
widespread damage to property and
agriculture can have a significant impact on
the economy of an area or country.
Overall, the effects of typhoons on humans
can
be
wide-ranging
and
severe,
highlighting the importance of preparation
and providing the right information and
support to affected communities.
DIRECTIONS: These pictures show the
effects of a typhoon. Complete the
phrases below. Choose from the words
in the box.
Complete the sentences.
To be safe during typhoon, people
should be stay at_________ . But if your
place is in danger due to flood, you
should ____________ or go to safe places.
Typhoon cause great destruction
in the community. It has a
significant impact on people's
daily lives and activities.
DIRECTIONS: Describe the
pictures that show human
activities during typhoon.
SCIENCE 5
Different Weather
Disturbances
QUARTER 4 WEEK 4
D
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3
Review!
DIRECTIONS: Describe the pictures that show human
activities during typhoon.
What do you think will happen to
plants if strong typhoon heats a
certain area?
Weather disturbances can also
destroy our means of livelihood.
Heavy Rainfalls and strong wind
can uproot tress and destroy
crops that provide us with food.
Effects of Typhoon on Plants
Typhoons affect plant’s life. They bring
heavy rains and strong winds. Heavy
rains can cause floods that drown plants
and destroy its crops. Toxic chemicals
like pesticides carried by floods can
saturate grassland. Destruction of plant’s
vegetation occurs too due to landslides.
They can take down the plants that
cause them to die. They can remove
productive soils that plants need to
grow. On the other hand, strong winds
can snap trees' leaves and branches,
causing them to snap and break. They
can cause the fall of big trees too.
Effects of Typhoon on Animals
Typhoons have a massive effect on the lives
of animals. Excessive rains that cause
flooding can drown them and can wash
away their habitats. Animals that are
trapped in floods will eventually die due to
starvation from being unable to get their
food. Domestic pets like dogs and cats also
suffer.
They too can become stressed when they
are brought by their owners to a safer place.
Numerous animals are also abandoned,
leaving them to struggle for survival. Some
animals are killed when their habitats such as
trees will be ripped down by a strong wind.
Several of them have been buried alive as a
result of landslides.
DIRECTIONS: Put a check mark / if it is
effect of typhoon to plants and X mark
if animals.
1. Landslides bury and destroy crops.
2. Big trees are uprooted.
3. Trees that are ripped down can kill
animals.
4. Seeds are swept away that makes
them unable to grow.
5. Animals are trapped and struggle to
survive.
6. Removal of productive soil.
7. Abandonment of animals.
8. Toxic chemicals saturate grassland.
9. Destruction of animals’ habitat.
10. Leaves and branches are broken.
Knowing that typhoons affect plants
and animals, list down some ways on
how you can help reduce their harmful
effects on them?
1._____________________
2._____________________
3._____________________
Typhoons cause so many destructions to
plants and animals because they bring
strong winds and heavy rains. They
usually cause a lot of danger and
damage such as destroying crops and
animal’s habitat, removal of productive
soil, breaking the leaves and the
branches of trees, saturating grassland
and the death of plants and animals.
Directions: Read and understand each
item carefully. Encircle the letter of the
correct answer.
1. How do typhoons affect plants?
A. Typhoons destroy crops.
B. Typhoons make plants grow healthy.
C. Typhoons enrich the soil with minerals.
D. Typhoons sweep seeds away and
enable them to grow.
2. Which of the following describes the
effect of typhoons on plants?
A. Plants and vegetation are being
damaged.
B. Removal of productive soil
C. Break leaves and branches of trees
D. All of the above
3. How do typhoons affect animals?
A. They make animals healthy.
B. They cause stress to animals.
C. They conserve animal’s habitat.
D. They don’t affect domestic pets.
4. The following are the effects of
typhoons on animals EXCEPT.
A. Uprooted big trees.
B. Destruction of animals’ habitats.
C. Animals are trapped in the flood.
D. Animals that are abandoned
struggle to survive.
5. Which of the following describes the effect of
typhoons on both plants and animals?
I. Typhoons destruct the habitats of plants and
animals.
II. Typhoons can saturate both plants and
animals.
III. Typhoons can stress both plants and animals.
IV. Typhoons can kill both plants and animals.
A. I, II and IV
B. I, III and IV
C. I, II and III
D. I, II, III and IV
SCIENCE 5
Dealing with
Weather
Disturbances
QUARTER 4 WEEK 4
D
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4
Review:
Knowing that typhoons affect plants and
animals, list down some ways on how
you can help reduce their harmful
effects on them?
1._____________________
2._____________________
3._____________________
Study the picture below.
1. What do you observe
in the picture?
2. What do you think
happened in the place?
3. What do you think will
the people living in the
house feel?
4. What do you think will
they be able to do in
that condition?
The Philippines is located in the typhoon belt,
where several typhoons pass each year. In
addition to typhoons, the southwest
monsoon brings heavy rains that cause
floods and rough seas, especially in July,
August, and September. Knowing the
weather forecasts can minimize the loss of
lives and properties due to weather
disturbances; it can also help the industries.
This is because man can prepare for the
bad weather. Millions of pesos worth of
properties and farm crops and people’s lives
are lost to flood and strong typhoons. These
damages make many people suffer.
We cannot change the path of the typhoon
or stop it from coming. But we can always
prepare for it. PAGASA, with its modern
technology, cab assess and monitor any
upcoming typhoon. Once we already have
all the information about it, we can now
prepare ourselves for it and lessen the
possible damages that the weather
disturbance may bring.
What to Do Before, During, and After a
Typhoon?
Here are some of the precautionary measures
that one should observe before, during and
after a typhoon.
Before
1. Check the roof of your house for any leaks.
Check the windows and make repairs if they
are broken.
2. Make sure that the posts and roofs of
your house are sturdy enough to
withstand strong winds.
3. Keep enough supply of water, rice,
canned goods, and medicines but do
not engage in the practice of panic
buying.
4. Prepare an emergency kit. It should include a
flashlight, medicines, ready-to-eat packed food
or canned goods, and some clothes. Bring this
emergency kit when you evacuate to a safer
place.
5. Secure all important documents in a waterproof
bag. This is to make sure that the documents
will not get wet when your place becomes
flooded.
6. Keep a battery-powered radio to keep yourself
updated on the latest news about the typhoon.
During
1. Stay indoors. Cancel or postpone any
travel plan.
2. If you live in a low-lying area, be alert
about your local officials’ advisory
regarding evacuation.
3. Stay away from places that may have
experienced short circuit.
5. If you are in an evacuation center, be
updated on the latest news advisory.
6. Boil your drinking water. Floods may
have contaminated the tap water.
7. Check if your family members or
relatives who are staying in the affected
areas are in need of help or rescue.
After
1. Ask an electrician to check the
electrical wirings or appliances that
were soaked in flood water.
2. 2.Check the damaged parts of your
house and have them repaired.
Replace them if necessary.
3. Boil your drinking water. Even after the
flood, water may not be that safe to
drink.
4. Ensure the safety of your family
members and relatives who were
affected by the floods.
5. Help the victims of calamities by giving
donations or being volunteer in relief
operations.
List down the top five important items that
you will prepare in order to survive the
hazards the typhoon might bring.
1.
2.
3.
4.
5.
During typhoons, people living in or
near the coastal areas are forced
to evacuate because their lives are
mostly at risk. What is the reason for
forcing the people to evacuate?
Why is it important to prepare
even before a typhoon hits a
certain locality?
Draw a
if the statement shows
precautionary measures in times of
typhoons and
if not.
1. Boil your drinking water even after
the typhoon.
2. Check the electrical appliances after
the flood subsided.
SCIENCE 5
Catch-Up Friday
QUARTER 4 WEEK 4
D
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5