3. 1. Active volcanoes are those that have erupted
in recorded history and have the potential to
erupt again.
2. Inactive volcanoes are those that have never
erupted and are not expected to erupt in the
future.
3. Active volcanoes are always erupting
continuously without any periods of dormancy.
4. Inactive volcanoes are completely devoid of
volcanic activity and pose no threat of eruption.
5. Active volcanoes are typically monitored
closely by scientists to detect any signs of
4. 6. Inactive volcanoes are also referred to as
extinct volcanoes.
7. A dormant volcano is synonymous with an
inactive volcano.
8. Inactive volcanoes can still exhibit signs of
geothermal activity, such as hot springs and
fumaroles.
9. Active volcanoes are usually characterized by
a lack of vegetation due to frequent eruptions.
10. Inactive volcanoes are often found in areas
where tectonic plates are actively moving and
colliding.
5. 1-3. What are the three types of
volcanoes
4-5. Give two (2) active volcanoes in the
Philippines
6-8. Causes of global climate change.
9-10. Remedies or solutions in mitigating
the effects of global warming.
6. 1. Which of the following is
a measure of a star's actual
intrinsic brightness?
•Apparent magnitude
•Absolute magnitude
7. 2. Which color of stars are
the hottest among the main
sequence stars?
a) Blue
b) Yellow
c) Red
d) White
8. 3. Which element is primarily
responsible for the energy
production in stars through
nuclear fusion?
a) Hydrogen
b) Helium
c) Carbon
d) Iron
9. 4. The coolest stars with a
temperature of about 2000 to
3500 K have the color ______.
a) blue
b) orange
c) red
d) yellow
10. 5. The Big Dipper is
an asterism that is
part of the
constellation Ursa
Minor.
