DEMO ppt

1. 5th Grade
SCIENCE 5
TEACHER CHRYSXIANNE
DANGOY

4. ATTENDANCE
CHECK

5. LET’S REVIEW!
1. What was our previous discussion all about?
2. What are these three natural state of matter?
3. How can you say that it is solid, liquid, and
gas? Can you give 1 example each of these
three natural state of matter?

6. WHAT’S MY TARGET?
At the end of the class, you are expected to:
a. Identify the materials that are good conductors of heat and
electricity.
b. Describe how light, sound, and heat travel.
c. Show how black and colored objects affect the ability to
absorb heat.
d. Understand how heat, light and sound produce.

7. A B C D E
We see apple as red because it reflects red light
D

8. A B C D E
Roads appear wet during summer because of the light
it refracts upward.
E

9. A B C D E
We tend to wear white and light clothing during
summer and black or dark clothes during winter.
B

10. A B C D E
Houses with white paint are cooler than those with
black or dark paint
C

11. A B C D E
Dark colored clothes dried faster than light
colored ones
A

13. My father usually goes to the farm to
plant some crops. It was a hot day.
What kind of clothes should he wear?
Why?

14. My sister can’t sleep at night, so what she
always do is listen to a song or music to
feel sleepy. What kind of song or music
should she listen in order to sleep? Why?

15. You want to drink a hot coffee,
what kind of drinking glass will you
use? Why?

16. DO YOU HAVE ANY IDEA
WHAT’S OUR TOPIC FOR
TODAY’S DISCUSSION?

17. THE EFFECTS OF
LIGHT, SOUND,
AND HEAT

18.  What are light, sound, and heat?
 What are the sources of light, sound, and
heat?
 How do light, sound, and heat travel?
 What are the uses of light, sound, and heat?

19. LIGHT
- is a form of electromagnetic radiation that enables the
human eye to see or make things visible. It is also defined as
radiation that is visible to the human eye.

20. SOURCES OF LIGHT can be divided into two (2):
NATURAL SOURCES
ARTIFICIAL SOURCES
resources that are found in the
environment and are developed without
the intervention of humans.
Other examples of natural sources:
• Fire
• Water
• Stars
any light source that is not naturally
occurring. Made by humans.
Other examples of natural sources:
• Light bulbs, lamp posts and televisions

21. HOW LIGHT TRAVELS?
Two ways on how light travels: REFLECTION and REFRACTION
REFLECTION
When people
look into a
mirror, they see
an image of
themselves
behind the glass.
REFRACTION
The refraction gives
the pencil a slight
magnifying effect,
which makes the
angle appear bigger
than it actually is,
causing the pencil to
look crooked.

22. THREE (3) DIFFERENT TYPES OF MATERIALS
THAT LIGHT WILL PASS OR NOT PASS
THROUGH
OPAQUE MATERIALS
TRANSPARENT MATERIALS
TRANSLUCENT MATERIALS

23. OPAQUE MATERIAL
Opaque objects is something
that allows no light through it.
OTHER EXAMPLES:
 METALS
 STONE
 WOOD
 TABLE

24. TRANSPARENT MATERIAL
- materials that lets light travel
through it, meaning we can see
through the object completely.
EXAMPLES:
 WATER
 GLASS
 EYEGLASSES
 AIR

25. TRANSLUCENT MATERIAL
A translucent material is an
object that you are not able to
clearly see through because only
some light can pass through.
EXAMPLES:
 TINTED CAR WINDOWS
 SUNGLASSES
 A PIECE OF TISSUE PAPER

27. DID YOU KNOW THAT DOGS CAN HEAR
SOUND AT A HIGHER FREQUENCY THAN
HUMAN?
SOUND

28. SOUND
- Is created when something
vibrates and sends waves of
energy into our ears.
- Is a form of energy that can be
heard and travels in waves.
There are sounds that are GOOD TO HEAR and there
are also sounds that are UNBEARABLE TO HEAR.

29. KINDS OF SOUNDS
PLEASANT SOUNDS
- Sound that feels happy, comfortable, or
evoke positive emotions.
Ex. birds, lullaby songs, ocean waves
and piano.
UNPLEASANT SOUNDS
- Sounds are those which make us cringe,
plug our ears, or evoke negative emotions.
Ex. are crying, drilling/construction,
something that might be startling, such as
thunder, a glass breaking, or a siren and
fireworks.

30. HEAT keep us warm. Another
form of energy. Can be felt
when sunlight hits you.
- It is energy that is transferred
from one body to another as the
result of a difference in
temperature.

31. - Energy that is transferred from one body to another as the result of
a difference in temperature.
- The sun is the main source of heat on Earth.
- The sun’s heat keeps the Earth warm enough for living things to
survive.
HEAT
Three ways on how heat is transferred?
* CONDUCTION – The transfer of heat from one substance to another
due to direct contact.
Ex. When you place a metal spoon on a bowl of a boiling
water, the heat will transfer to the metal spoon.

32. * CONVECTION – The transfer of heat through a fluid caused by
molecular motion.
Ex. Some cuisines start with boiling meat, and
vegetable, the heat from the boiling water will be transferred to
the vegetables and meat for it to be cooked.
* RADIATION – is energy that moves from one place to another.
Ex. Heat from a stove burner

33. GOOD CONDUCTORS OF HEAT AND ELECTRICITY

34. APPLICATION
QUIZ BEE
1. The teacher will show a flashcards containing
different questions.
2. The students will be given 20 seconds to answer the
questions in the box.
3. After 20 seconds, the teacher will count 5 seconds
to raise their answers.

35. FLASHCARDS
It is an object that you
are not able to clearly
see through because
only some light can pass
through.
It is a form of
energy that can be
heard and travels
in waves.
It is another form of
energy. Can be felt
when sunlight hits
you.
A sound which make
us cringe, plug our
ears, or evoke
negative emotions.
HEAT
LIGHT TRANSLUCENT MATERIAL SOUND
The transfer of heat
from one substance
to another due to
direct contact.
UNPLEASANT SOUND CONDUCTION
It is a form of
Electromagnetic radiation
that enables the human
eye to see or make things
visible.

36. ASSESSMENT
Directions: Choose the object that best describe your answer.
1. Encircle the object that produces as heat energy.
2. Encircle the object that produces light energy.

37. 3. Encircle the object that produces sound energy.
4. Encircle the object that produces sound and light energy.
5. Encircle the object that produces light and heat.

38. ASSIGNMENT
DRAWING
Choose among LIGHT, SOUND, and HEAT and then
show its importance through a poster making.
Provide at least 10 sentences at the back of your
paper that will explain your drawing. Use long
bond paper for your poster. Make it creative and
neat.