Earthquakes 1
Earthquakes are caused by the movement of __________________
Tectonic plates
Magma solidifies into ____________
Lava
Tectonic plates are present on which of the following layers;
a) Core
b) Mantle
c) Crust
Crust
Earthquakes occur at the edge of ________________
tectonic plate boundaries
Identify the instrument used to measure voltage.
Voltmeter
Identify the instrument used to measure an Earthquake.
Seismometer
a) Top
b) Tube from the top to the magma chamber
a) Vent
b) Conduit pipe
Identify the tectonic plate movement that results in mountain formation.
Convergent plate boundary movement
Which type of earthquake wave causes the most destruction?
a) Primary (P) waves
b) Secondary (S) waves
b) Secondary (S) waves
Identify the type of natural phenomena that can occur as a result of TRANSFORM PLATE BOUNDARY motion.
Earthquakes
Tsunami
Identify the three main types of earthquake waves.
Primary (P) wave
Secondary (S) wave
Surface waves
Give the name of the volcano that produces a violent eruption by releasing large amounts of gas and cinder (lava fragments).
Cinder cone volcano
Tectonic plate movement is caused by c_________ currents in the m____________.
CONVECTION
MANTLE
Identify the following parts of an earthquake.
a) Point of origin
b) Point above the point of origin on the earths surface.
a) Focus
b) Epicentre
1) What is meant by the term 'Ring of Fire'?
2) Identify a country that is part of the 'Ring of Fire'
3) Indicate the type of activity that takes place at the 'Ring of Fire'
- Edge of tectonic plates
- High level of volcanic activity
- Divergent tectonic plate movement
- Japan, North/South Korea, North/South America, Mexico, Indonesia
Earthquakes produce sei_________ waves that carry ene________. The first sei_______ wave produced is p_____________ waves, followed by s__________ then s______________ waves.
1- seismic
2 - energy
3 - seismic
4 - primary
5 - secondary
6 - surface
Identify the three types of volcanoes present.
Cinder cone volcano
Shield volcano
Composite volcano
Identify TWO pieces of evidence to support Alfred Wegener's Theory of Continental Drift.
Any 2 of the following
- aligning coastal margins
- Identical fossils present on each continent
- Similar species present on each continent
A high magnitude earthquake is ___________ on the richter scale.
Such earthquakes are measured using a sei____________.
The closer the ep___________ is to the foc_______ the greater the damage.
7-9
seismometer
epicentre
focus
As predators (eagles) increase the prey numbers will ____________.
Predators are examples of carn________
Prey are examples of her________ or omn________
decrease
carnivores
herbivores/omnivores
Identify 5 locations which have experienced recent earthquake activity.
- Japan
- Indonesia
- New Zealand
- North/South Korea
- South America
Answer the following three questions
a) Volcanoes produce which type of rocks?
b) Where do most volcanoes occur; oceanic or continental crust?
c) Identify the number of active volcanoes present in Australia.
a) Igneous rocks
b) Oceanic crust
c) Zero active volcanoes in Australia
Tectonic plate motion occurs due to con_________ currents in the earths m________. Different types of plate movement result in e_________, volc_________ and ts___________.
Earthquakes occur as a result of tr________ plate movement. T___________ can also occur as a result of this activity.
1 - convection
2 - mantle
3 - earthquakes
4 - volcanoes
5 - tsunami's
6 - transform
7 - tsunami
Primary waves travel as _____________ waves
Secondary waves travel as ___________ waves
Longitudinal wave
Transverse wave
a) Identify a biotic and abiotic factor in a pond.
b) Identify an invasive species that acts as a threat to our ponds.
c) Identify 3 sources of pollution for the pond.
a) Biotic - any living organism in the pond
Abiotic - lithosphere, hydrosphere, atmosphere
b) Cane toad, Carp, Indian myna birds
c) Plastic, Petrol, Oil, Animal wastes