to hear a sound, there must be . . . . and . . . .
vibration to make the sound and a medium containing particles through which the sound wave can travel.
When the Moon comes between the Sun and the Earth, . . . . will happen.
solar eclipse
What is B?
mantle
Echoes can be heard because . . .
sound waves are reflected
some people rejected Alfred Wegener's hypothesis because . . .
he can't explain what was causing the continents to move.
What is A?
crust
a . . . happens when the Earth comes between the Sun and the Moon.
lunar eclipse
What event could occur from this type of plates movement?
Earthquake
liquid metals of iron and nickel is found on letter . . .
C
The tectonic plates theory is . . . .
the Earth's crust is made up of large tectonic plates and these tectonic plates move slowly on the liquid rock called magma beneath them.
Lunas eclipse happens during daytime.
False
What events could occur from this type of plate movement?
Earthquake, volcanoes
3 evidences that support Alfred Wegener hypothesis are . . .
the shapes of the continents fit together, the types of rock on the different continents match up where they fit together, the fossils on the different continen
molten hot liquid rock is on letter . . .
B
solid metals of iron and nickel is found on letter . . .
D
In 1912, German scientist, Alfred Wegener suggested a hypothesis of . . . .
continental drift
what is C?
outer core
solid rock can be found on letter . . .
A
what is D?
inner core