Question How can temperature lead to weathering of rocks?

Question

Rocks can melt when they become hot, which can lead to pieces breaking off.
Rocks move faster when they are heated, which can cause the pieces to eventually move away.
Rocks become ice when they get cold, which can later melt and wash away.
Rocks expand and contract when they are heated and cooled which cause them to break.

Answer 1

The correct explanation for how temperature can lead to the weathering of rocks is:

Rocks expand and contract when they are heated and cooled, which causes them to break.

This process, known as thermal expansion and contraction, occurs because different minerals within the rock can expand and contract at different rates when temperatures change. Over time, repeated cycles of heating and cooling can weaken the rock structure, leading to cracks and eventually breaking apart. This is a physical weathering process.

Answer 2

Which part of Earth experiences physical weathering?
crust
mantle
inner core
outer core

Answer 3

The part of Earth that experiences physical weathering is the crust. The Earth's crust is the outermost layer where weathering and erosion occur due to environmental factors such as temperature changes, water, wind, and biological activity. The mantle, inner core, and outer core do not experience physical weathering in the same way, as they are deeper layers and are subject to different geological processes.

Answer 4

Which is the last stage of physical weathering in rocks?
sand
rock
boulder
pebble

Answer 5

The last stage of physical weathering in rocks is typically considered to be sand.

Physical weathering involves the breakdown of rocks into smaller particles over time. The sequence usually starts with larger rocks (boulders) breaking down into smaller fragments (pebbles), which can further break down into even finer particles (sand). Hence, sand represents a more advanced stage of decomposition through physical weathering.

Answer 6

What must be present on a rock that undergoes frost wedging?
a crack
sharp edges
holes around it round shape

Answer 7

For frost wedging to occur on a rock, there must be a crack.

Frost wedging is a type of physical weathering that happens when water enters cracks in the rock. When the temperature drops, the water freezes and expands, causing the crack to widen. Repeated freeze-thaw cycles can eventually cause the rock to break apart. Therefore, the presence of a crack is essential for frost wedging to take place.