The top layer of the mantle is liquid

[nininaz]

Hello All,
The attachment excerpted from the book "Reading Inside 2".
According to the context what is the answer of below question?! and why?!
The top layer of the mantle is liquid. ( true / false)

 

[NortT]

I'm not a teacher.

Hello, I think the right answer is true because "plates float on top of the mantle, the layer of molten rock".
Look at this http://www.macmillandictionary.com/dictionary/british/molten

 

[nininaz]

Hello, I think the right answer is true because "plates float on top of the mantle, the layer of molten rock".
Look at this http://www.macmillandictionary.com/dictionary/british/molten

Thanks for your reply. But I thought the answer was "false", because mantle situated between the planet's outer crust and its dense nucleus, so the top of the mantle is planet's crust which is solid not liquid.Am I wrong?!

 

[Roman55]

I am not a teacher.

NortT is right.

According to the extract, the mantle is a layer of molten rock. Therefore every part of the mantle is composed of molten rock. The planet's crust is on top of the mantle, it isn't the top (upper) part of the mantle.

 

[Rover_KE]

NortT, please state that you are not a teacher, in accordance with the forum rules.

 

[NortT]

nininaz, I googled a little about the earth's mantle. I think the right answer depends on which kind of test are you working through.
The official site of Earth Observatory of Singapore (http://www.earthobservatory.sg/faq-on-earth-sciences/earth’s-mantle-made-liquid-magma) says that the mantle is solid and a liquid mantle is a misconception; however, I think that your article claims that the mantle is liquid.

I'm not a teacher.