8. Important Terms
a. Baryonic matter – (4.6% )ordinary matters consisting protons,
electrons, and neutrons: atoms, planets, stars, galaxies, nebulae, and
other bodies)
b. Dark Matter –(cold dark matter 24%) has gravity but does not emit light.
c. Dark Energy –(71.4%) a source of anti – gravity
d. Protostar – early stage of the formation of the star
e. Thermonuclear reaction – nuclear fusion reaction responsible for the
energy produced by stars
f. Main sequence stars – fuse hydrogen atoms to form helium atoms
g. Light years – the distance light can travel in a year, a unit of length
used to measure astronomical distance
10. Discussion
Stars – the building block of galaxies born out
of clouds of gas and dust in galaxies.
Instabilities within the clouds eventually
results into gravitational collapse, rotation,
heating up, and transformation to a protostar
– the core of a future star as thermonuclear
reactions set in.
11. Discussion
Galaxy – is a cluster of billions
of stars and clusters of galaxies
form supercluster.
12. Discussion
Age of the Universe – based on the recent data 13.8 billion years old
Diameter of the universe – at least 91 billion light years
13. Application
Group Activity –
1. Describe the composition of the universe through sing,
rap, poem, mobile journo about the composition of the
universe
2. Divide the class into 4 groups.
3. The group will present according to the task they pick
4. The activity will be done in 5 minutes.
5. Rubric is used in scoring the activity.
