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in the figure where we can see the total lunar eclipse?
in the dark grey
what this phenomenon called
Fold montains
Extinct volcanoes mean ....
volcano will not erupt again
Mention 3 types of plates movement
Plates moving together (convergent), moving apart (divergent), sliding past (transform)
What are the two most common element in the earth crust
Oxygen and Silicon
What are the layer of the earth?
Crust, Mantle, Outer core, inner core
Why does sound not travel in vacuum?
Because sound need medium to travel
This figure illustrated .... phenomenon
Echo
More echoes will produce at a room with ... (glass window or thick carpet)
glass window
The reflection of a sound wave is called an ....
echo
True or false, sound waves can travel in vacuum?
False
Which of these arrows shows how the sound waves vibrate?
C
Where more echoes is created?
Cave
what is the speed of wave in air?
340 m/s
What makes the sound?
vibration of an object
Some volcanoes which they have not erupted for a very long time is called as ...
Inactive volcanoes
What part of the Earth's structure which consist liquid only?
Mantle
What is Pangaea?
Pangaea was one massive super continent that existed millions of years ago.
Which parts of the Earth are made of solid rock?
crust
Which parts of the Earth are made of liquid (molten) iron and nickel
Outer core
Which tectonic plate do we live on?
Eurasian Plate