Question

good morning i want all answers now 1 .The 3 concentric layers of the earth are __ ,__ & ___ 2.The thickness of the crust varies from __ to __ km 3.The ___ crust is less dense than the ___ crust 4.The upper part of the crust is made up of __ rocks 5.The density of Sial is ___ 6. The lower part of the crust is made up of __ rocks 7. Sima has an average density of ____ 8.The continents are said to be ____ on a sea of sim

Answer 1

Answer:

1. crust,core and mantle

2. 5 to 35 km

3. lower,upper

4.silica,aluminia

5. average density of crust is 3.0g per cubic cm

6.silica, magnesium

7.average density of crust is about 3.0g per cubic cm

8. idk

hope it helps you