ks3 science revision

Which statement matches an igneous type of rock?

• 1. Formed from layers of sediment, and which can contain fossils.

• Formed from existing rocks exposed to heat and pressure over a long time.

• 1. Formed from cooled magma, with minerals arranged in crystals.

Which part of the diagram corresponds to where transportation of eroded rock material is most likely to take place?

• k

• f

• e

• l

Sandstone is grainy and crumbly and may contain fossils. Its rock type is.....

• Igneous

• Metamorphic

• Sedimentary

• Soft

Water gets into the cracks of rock and freezes, causing the rock to break.  What is this an example of?

• erosion
• weathering

Fossils (the remains or impressions of prehistoric organisms preserved in petrified form or as molds or casts) are found in ___________ rocks only.

• Igneous

• Metamorphic

• Sedimentary

• Iron Oxide

Granite is an intrusive igneous rock. Which best describes its characteristics?

• A hard rock, large crystals due to slow cooling of magma

• A hard rock, small crystals due to fast cooling of lava

• A soft rock, large crystals due to slow cooling of magma

• A soft rock, small crystals due to fast cooling of magma

• What type of rocks are formed from heating or squashing in Earth’s crust?

• Sedimentary

• Metamorphic

• Igneous

• The Rock

Over millions of years, sedimentary layers form from which of the following?

• sand

• silt

• dead plants & animals

• molten lava

Use the diagram to answer the following question.

In which stage of the rock cycle shown above would you predict the formation of fossils?

• Stage L

• Stage M

• Stage N

• Stage P

The diagram represents a cross-section of a cliff. It shows several rock layers containing fossils.

Which of the following layers of rock is most likely the youngest?

• the layer containing trilobites

• the layer containing fishes

• the layer containing dinosaurs

• the layer containing mammals