Tsunami 😊

Question 1

What does the size of tsunami waves depend on?

Answer 1

• cause of the wave
• the distance travelled
• water depth

Question 2

What will the wave do over time?

Answer 2

It will retreat and increase in size

They compress together

Question 3

What causes a tsunami? X2

Answer 3

Ocean floor is uplifted due to seismic activity

The water is displaced

Question 4

Negatives of a tsunami? X5

Answer 4

• cause destruction for several miles
• ruin the land/ soil
• cause deaths and injuries
• contaminates food and water supplies
• diseases and illnesses spread

Question 5

Can you predict tsunamis?

What can you do?

Answer 5

No way to predict them

Can give people early warning

Question 6

What ways can give people early warning signs?

Answer 6

• tsunami early warning systems are in place in the Pacific and Indian oceans
• use seismic sensors to detect undersea earthquakes
• DART system ( Deep-ocean Assessment and Reporting of Tsunami)

Question 7

How does a DART system work? X5

Answer 7

• uses sea bed sensors and surface buoys to monitor pressure change
• when waves are detected information is sent back via satellites
• stations review the info
• uses computer modelling to estimate the size and direction of tsunami
• people at risk are warned