Science Lessons for Grade 7

1. INTRODUCTION
TO SCIENCE
AND
TECHNOLOGY
Jenny R. Alvarez
Science Teacher

2. FOCUS POINTS:
1.Describe how science and
technology may improve or
degrade our way of life.
2.Discuss the significant
contributions of great men and
women in science and
technology.
3.Recognize the importance of
science in our daily lives.

3. Guess It ; and You Got It !

4. R
T

5. R
O
B
O
T

6. A E A

7. C A M E R A

8. R T
K
C

9. R O S
T
E
K
C

10. C L
L
O E

11. C
E
L
L
P
H
O
N
E

12. T N
S

13. C T A N
C
S

14. WHAT DID YOU
OBSERVE FROM THE
PICTURES ?

15. What is Science
and what does it
do?

16. Science comes from the
Latin word scientia which
means, “having knowledge”.
Science is an observation followed
by experimentation leading to
further observations and followed
again by further experimentations”.

17. Science
and
Superstition

18. Superstitions are beliefs,
which are not usually explained
by the methods of the natural
sciences.
They also began from curiosity
and observation, but unlike
science, no experiment was
conducted to test whether the
claims are correct or not.

20. Branches
of
Science

21. Classifications
of
Science

22. Social
Science

23. 1. Social science focuses on the
study of people, culture, and
societies.
 Economics - production, distribution,
and consumption of goods
 Geography - Earth's surface
 History - Past
 Law - Rules
 Education - Knowledge
 Sociology - Social problems
 Psychology - science of mind and
behavior

24. Natural
Science

25. 2. Natural Science seeks to
understand the natural world and its
different processes.
 Biology
 Chemistry
 Physics
 Mathematics

26. Division of natural science:
1. Pure Science is used in pursuit
of new knowledge.
2. Applied Science use the
discoveries of the pure sciences
to create practical solutions to
existing problems and create
products that can be used in
actual settings.

27. Pure science, also called basic or
fundamental science, has the goal of
expanding knowledge in a particular
field, without consideration for the
practical or commercial uses of the
knowledge. By contrast, applied
science aims to use scientific
knowledge for practical applications,
such as curing diseases and
developing sources of clean energy.

28. Applied Sciences

29. EXAMPLES OF
PURE SCIENCE
1. Scientists study human vision
to learn how the eye works.
2. Students look through a
microscope to see what’s
inside a cell.
3. A biologist is experimenting
on a plant’s reaction to lack of
sunlight.
4. Anatomy, Cell Biology, Botany,
Physics, Chemistry, Earth
Sciences are all pure sciences.
EXAMPLES OF
APPLIED SCIENCE
1. Scientists invent motion pictures,
eye glasses, and contact lenses.
2. Pharmacologists make and
manufacture drugs and
medicines.
3. Engineers create bridges and tall
buildings.
4. Medicine, Computer
Science, Engineering,
Robotics and
T
echnology are all
applied sciences.

30. Two Divisions
Of
Pure Science

31. 1. Physical Sciences are those
that involve the study of
nonliving things.
Physics
Chemistry
Earth Science

32. PHYSICS
studies matter, its motion and
behavior through space and time, and
the related entities of energy and
force.

33. CHEMISTRY
 is a branch of science that
involves the study of the
composition, structure and
properties of matter.

34. EARTH SCIENCE
 This is a branch of science
dealing with the physical and
chemical constitution of the
Earth and its atmosphere.

35. 2. Biological Sciences involves the
study of living things.
 Zoology
 Botany
 Physiology
 Anatomy

36. ZOOLOGY
 studies the animal kingdom,
including the structure,
embryology, evolution,
classification and distribution of all
animals.

37. BOTANY
 It is the scientific study of
plants. It includes the study of
their structure and how they
grow.

38. ANATOMY AND PHYSIOLOGY
 Anatomy is
about structure
 Physiology is
about function

39. Technology

41. Technology is known as the
application of scientific knowledge
for practical purposes.
- It uses the concepts and ideas in
science in developing products
that assist people in their daily
lives.
- It can also be used to solve
pressing problems that we
encounter.

42. - It aims to make the lives of people
more comfortable.
- It enables us to multitask and finish
work faster.

43. Y
our book is a
product of
technology!

44. Without technology
,
you would have to
write all these things
by
hand. That’swhy books
back then were
expensive
because it takes a lot of
effort to finish them.

45. You owe
your thanks
to
technology!
It aims to
make your
life easier.

46. Example

47. Examples:
- computer and other gadgets
- Laser
- CT and MRI scanners
- Information and communication
technology
- Selective breeding
- Food preservations

49. LASER – LIGHT AMPLIFICATION BY
STIMULATED EMISSION OF RADIATION

50. MRI - MAGNETIC RESONANCE IMAGING
 is a medical imaging technique used in
radiology to form pictures of the anatomy
and the physiological processes of the
body.

51. CT - COMPUTED TOMOGRAPHY
 CT scan can reveal anatomic details of
internal organs that cannot be seen in
conventional X-rays.

53. INFORMATION AND COMMUNICATION
TECHNOLOGY

54. INFORMATION AND COMMUNICATION
TECHNOLOGY [ICT] (USES)
Sending
messages
Internet
Satellite
communication
TV’s and radios

55. SELECTIVE BREEDING
 also known as artificial selection, is a
process used by humans to develop new
organisms with desirable
characteristics. Breeders select two
parents that have beneficial phenotypic
traits to reproduce, yielding offspring
with those desired traits

56. SELECTIVE BREEDING (USES)
1. Increase yields of crops
2. Develop crops resistant to diseases
3. Enhance the nutritional value of
food
4. Improve traits and characteristics
of an
organism

58. SELECTIVE BREEDING (PRODUCT)
GMO or
Genetically
Modified
Organism.

61. FOOD PRESERVATIONS
 prevents the growth of
microorganisms and slowing the
oxidation of fats that cause
rancidity.

63. What are the effects of
Science and Technology on
Society

66. EFFECTS OF SCIENCE AND TECHNOLOGY
 It has brought distant places closer and simplified
information access.
 Technology was also responsible for weapons that
brought violence within and among nations.
 One of the biggest problems is water and air
pollution. Pollution is not a product of Science. It is
just an after-effect.

67. THERE ARE POSITIVE AND
NEGATIVE SIDES IN
EVERYTHING, BUT IT IS UP TO
HUMANS AS CONSUMERS OF
SCIENCE AND TECHNOLOGY TO
CHOOSE HOW THEY WILL BE
USED.

68. Thank You Lirians!