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