Show:
Earthquakes
Tsunamis
Vocabulary
Tides
Preparation
100
What causes an earthquake?
The movement of tectonic plates.
100
Do tsunamis cause a lot of damage?
Yes
100
What causes a tsunami?
Earthquakes
100
True or False: Tides are not strong enough to strand boats
False
100
During an earthquake where is a good spot for safety?
Under a table (desk, chair etc...) or a well built strong building.
200
What is an earthquake?
A violent shaking in the ground
200
Tsunamis can move up to what speed?
500mph-600mph
200
Tsunamis usually _____ the land near shore.
submerge
200
Tides helps circulate the _____ that ocean plants and fish need.
Nutrients
200
Does the water near shore move when a tsunami is approaching?
Yes it goes towards the ocean and moves back away from land.
300
About how many people are killed by earthquakes annually?
Around 10,000 people per year.
300
Does the top or bottom of the tsunami hit land first?
Bottom
300
These have an effect on tides.
Sun and/or moon's gravity.
300
The area between the low and high tide is called ____.
Inter-tidal waves
300
True or False: Stay away from high ground during tsunamis.
False
400
What scale is used to measure earthquakes?
Richter scale.
400
True or False: Tsunamis come in a series of waves.
true
400
Records of these have been kept for around 1,000 years.
Tides
400
Sir Isaac Newton discovered the closer the moon and sun are to the Earth the______the force of gravity.
Stronger
400
What are some things you want to keep with you during an earthquake?
phones, flashlights, radios, contacts ( phone numbers ) etc...
500
Where do most earthquakes occur each year?
Ring of fire.
500
What does tsunami mean in Japanese?
"Harbor Waves"
500
An earthquake is also called what?
Temblor
500
When the high tide is receding it is called _____.
ebb tide
500
How to scientists predict tsunamis?
They can't.