Page 317 - (DK) I Can’t Believe It! 2

TRUE OR FALSE? 315

Richter scale FAST FACTS
1–4.9 = light,
minor movement, Is there THE BIGGEST EARTHQUAKE
more than
64,000 a year anywhere OF THE 20TH CENTURY
on Earth where MEASURED
Jell-O does not
wobble?
9.5 ON THE
RICHTER SCALE

The Great Chilean Earthquake in 1960 resulted in
landslides, tsunamis, and floods. The earthquake
that caused the tsunami in the Indian Ocean on
December 26, 2004, measured 9.1–9.3.

MOONQUAKES
OCCUR ON THE
MOON

The highest a moonquake has reached is 5.5
on the Richter scale. Although earthquakes
tend to be stronger, these shallow moonquakes
all lasted more than 10 minutes, whereas on
Earth vibrations usually last just half a minute.
Richter scale 5–5.9 =
moderate, strong, Richter scale 8+ =
sudden movement, extreme, destructive
on average movement, on
800 a year average one a year

Richter scale 7–7.9 =
major, very severe
movement, on
average 18 a year

US_314_315_309600_Earthquakes.indd 315 19/12/17 3:50 pm