Inside Our Earth; Our Changing Earth

Which is the thinnest layer of the earth?

• Mantle

• Core

• Crust

• Lithosphere

Which of the following is an intrusive igneous rock?

• Basalt

• Granite

• Sandstone

• Marble

The earth’s inner core is primarily made up of:

• Silica and alumina

• Silica and magnesium

• Nickel and iron

• Iron and aluminium

Which rock changes into marble under heat and pressure?

• Granite

• Basalt

• Limestone

• Clay

Which rock is formed by the cooling of molten magma at the surface?

• Intrusive igneous rock

• Sedimentary rock

• Metamorphic rock

• Extrusive igneous rock

Which type of rock often contains fossils?

• Igneous

• Metamorphic

• Sedimentary

• Intrusive

The cyclic transformation of one type of rock into another is called:

• Rock formation

• Fossilization

• Rock cycle

• Erosion

Which of the following forces causes earthquakes and volcanoes?

• Exogenic forces

• Endogenic forces

• Gravitational forces

• Tidal forces

The place on the earth's surface above the focus of an earthquake is called the:

• Crater

• Core

• Epicentre

• Seismograph

Which landform is formed when a river erodes a steep slope?

• Meander

• Delta

• Waterfall

• Levee