Earth’s Structure and Layers
Physics ⇒ Earth and Space Physics
Earth’s Structure and Layers starts at 6 and continues till grade 12.
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See sample questions for grade 11
A geologist is studying a rock sample that originated from a depth where temperatures are about 4,000°C and the material is mostly liquid. From which layer is the sample most likely taken?
Describe the main difference in composition between the Earth's core and mantle.
Describe the process of convection in the Earth's mantle and its significance.
Explain how the study of seismic waves helps scientists understand the structure of the Earth's interior.
Explain why seismic waves change speed and direction as they travel through different layers of the Earth.
Explain why the Earth's magnetic field is important for life on Earth.
Name the two main types of Earth's crust.
A geologist is studying a rock sample that originated from a depth where temperatures are about 4,000°C and the material is mostly liquid. From which layer is the sample most likely taken?
The asthenosphere is best described as:
(1) A rigid, brittle layer
(2) A semi-fluid, plastic-like layer
(3) A solid metallic layer
(4) A gaseous layer
Which layer of the Earth is liquid?
(1) Inner core
(2) Outer core
(3) Mantle
(4) Crust
Which of the following best describes the composition of the mantle?
(1) Mostly iron and nickel
(2) Silicate rocks rich in magnesium and iron
(3) Water and gases
(4) Pure carbon
Which of the following best explains why the inner core remains solid despite high temperatures?
(1) Low pressure
(2) High pressure
(3) Low density
(4) High water content
Fill in the blank: The ______ is the layer of the Earth where tectonic plates are found.
Fill in the blank: The boundary between the Earth's crust and mantle is called the ______.
The boundary between the mantle and the outer core is called the ______ discontinuity.
The Earth's lithosphere is composed of the ______ and the uppermost part of the mantle.
True or False: The asthenosphere is located above the lithosphere.
True or False: The continental crust is generally thicker than the oceanic crust.
True or False: The Earth's core is divided into two parts: the inner core and the outer core.
True or False: The inner core of the Earth is solid due to extremely high pressure.
