How rocks change from one kind to another
Grade 6 Science Worksheet - Challenge Me
Circle the best answer.
A granite grain breaks off a mountain, rides a river to a lake floor, and is buried and cemented. Which rock does Esme say it ends up in?
- Igneous rock, since it started as granite
- Metamorphic rock, since it was buried
- Sedimentary rock
- Magma, since it went underground
Lava cools into basalt. Much later, the basalt is buried deep and heated and squeezed. Which pair names the two rock types in order, as Jun traces them?
- Igneous, then metamorphic
- Igneous, then sedimentary
- Metamorphic, then igneous
- Igneous, then magma
a marble layer melting deep down, and magma rising into a crack that stays below the surface. Marble is buried so deep that it melts. The magma rises into a crack and cools slowly, still underground. What forms, by Kira's trace?
- Igneous rock with large crystals
- Sedimentary rock
- New marble
- Igneous rock with tiny crystals
Luz's friend says metamorphic rock forms when rock melts and cools again. Which response is best?
- Disagree: it changes while solid, under heat and pressure
- Disagree: it forms when sediment is cemented
- Agree: heat from the Sun melts it
- Agree: melting is how rocks change type
Noah's cousin says the Sun's heat is what melts rock into magma. Which response is best?
- Agree: sunlight soaks deep into rock
- Disagree: Earth's inner heat melts rock; the Sun drives weathering
- Disagree: rocks stay solid forever
- Agree: the Sun powers the whole cycle
Pia plans to watch sand turn into sandstone in a jar on the windowsill. About how long does that change take in nature?
- It cannot happen; sand stays sand
- A few days, once the sand is wet
- About a year, after one summer of sun
- Thousands to millions of years
A few rock-cycle changes are fast. Ren looks for one that can happen in hours to days. Which change is it?
Use the picture in question 6.
- Sand cementing into sandstone
- Limestone changing into marble
- A mountain wearing down to sand
- Lava cooling into rock at the surface
A layer of shale is buried kilometers deep. Over millions of years, heat and pressure act on it, but it never melts. What does Tala predict it becomes?
- Magma, as soon as it is buried
- Sandstone, from being pressed again
- Slate, a metamorphic rock
- Shale still, since rocks keep their type
Read this first
Use this
Model card:
In a class crayon model of the rock cycle, Zee presses loose crayon shavings into a layered block by hand. Which rock does the block stand for?
- Sedimentary rock
- Metamorphic rock
- Igneous rock
- Lava
Next, the layered crayon block is warmed in warm water and squeezed hard, but it does not melt. Which rock does it model now, says Ari?
Use the picture in question 9.
- Sedimentary rock, since it still has layers
- Igneous rock, since it was warmed
- Metamorphic rock
- Magma, since heat was used
