Earth’s Structure
Geography ⇒ Physical Geography
Earth’s Structure starts at 6 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Earth’s Structure.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
Describe how scientists study the interior of the Earth.
Describe the composition of the Earth's mantle.
Describe the difference between oceanic and continental crust in terms of composition and thickness.
Explain how the Earth's magnetic field is generated.
Explain the difference between the lithosphere and the asthenosphere.
Explain the term 'discontinuity' in the context of Earth's structure.
Explain why oceanic crust is denser than continental crust.
Explain why seismic waves change speed and direction as they travel through the Earth.
What is the approximate radius of the Earth? (1) 1,000 km (2) 3,200 km (3) 6,400 km (4) 12,800 km
What is the approximate temperature at the center of the Earth? (1) 500°C (2) 1,000°C (3) 3,000°C (4) 5,000°C to 6,000°C
What is the approximate thickness of the Earth's crust? (1) 5-70 km (2) 100-200 km (3) 500-1000 km (4) 2000-3000 km
What is the main element found in the Earth's core? (1) Oxygen (2) Iron (3) Silicon (4) Magnesium
The boundary between the crust and the mantle is known as the ________.
The Earth's crust is broken into large pieces called ________.
The movement of tectonic plates is mainly caused by ________ currents in the mantle.
The outermost layer of the Earth is called the ________.
True or False: The Earth's core is made up mainly of iron and nickel.
True or False: The Earth's crust is uniform in thickness everywhere.
True or False: The Earth's inner core is hotter than the outer core.
True or False: The Earth's mantle extends up to a depth of about 2,900 km below the surface.
