1) An earthquake's strength can be described by its magnitude or intensity. Magnitude refers to the release of energy measured through instruments, expressed in Hindu-Arabic numerals. Intensity considers damage to structures and interviews with people, expressed in Roman numerals. 2) Methods used by experts to gather data on earthquakes include inspecting damaged buildings and structures, and interviewing people in affected areas to determine intensity. Magnitude is measured through complex instruments that detect the release of seismic energy. 3) Magnitude is expressed using Hindu-Arabic numerals.

1. By: Jan del Rosario

3. A V E Q U
K
R
Q U A E

4. A
U
S F I
M
RTN
T S N A I

5. N
T
E Y I
S
NTI
I N E N I T Y

6. N
G
A U I DTM
EM A N I T U D

7. Release of energy
stored under the
Earth’s surface
Seismograph
Magnitude

8. Magnitude 2 – may or may not be felt
Magnitude 4 – felt by most people
Magnitude 6 – can lead to a lot ofmage
inMagnitude 6 – can lead to a lot of
damage in highly populated areas.

9. Magnitude 7 – can cause severe damage
Magnitude 8 or 9 results in widespread
destruction

10. Magnitude vs Intensity
Intensity
- Buildings and
structures are
inspected
- People are interviewed
- Roman numerals
Magnitude
- Release of energy is
measured through
complex instruments
and methods
- Hindu-Arabic numerals

11. 1-2. What are the 2 ways of describing an
earthquake’s strength?
Daily Checkup
3-4. Give 2 ways/methods of gathering data
used by experts and scientist.
5. Which is expressed in Hindu-Arabic
numerals?