How rocks change from one kind to another

Grade 6 Science Worksheet - Building Confidence

Circle the best answer.

1. 1.

   On a hike, Ari finds a rock made of sand grains pressed together in flat layers, with a tiny shell fossil inside. Which type of rock is it?

   • Igneous
   • Magma
   • Sedimentary
   • Metamorphic
2. 2.

   Bo reads about lava that poured from a volcano, then cooled and hardened into dark rock. Which type of rock formed?

   • Sedimentary
   • Metamorphic, since the lava was hot
   • Sediment
   • Igneous
3. 3.

   On the diagram, arrows from all three rock types point to magma. Which process belongs on those arrows, says Luz?

   • Pressing and cementing
   • Weathering
   • Melting
   • Just igneous rock melts; the rest cannot
4. 4.

   An arrow on Milo's diagram runs from igneous rock to sediment. Which processes belong on that arrow?

   • No arrow; igneous rock must turn metamorphic next
   • Weathering and erosion
   • Heat and pressure
   • Melting and cooling
5. 5.

   The kitchen counter at Noah's place is granite, with large crystals you can see. Which type of rock is granite?

   • Igneous
   • Metamorphic
   • Sediment
   • Sedimentary
6. 6.

   Pia learns that slate starts as shale, a mudstone, and is changed by heat and pressure underground. Which type of rock is slate?

   • Metamorphic
   • Sedimentary, like the shale it came from
   • Igneous, because heat was involved
   • Magma that cooled
7. 7.

   Cross-section, not to scale: bits of shell settling on a sea floor and forming layers. Ren learns that much limestone forms from bits of shell piling up on the sea floor and hardening. Which type of rock is it?

   • Igneous rock
   • Sedimentary rock
   • Lava rock
   • Metamorphic rock
8. 8.

   Wind and rain slowly wear a mountain down into sand. Which energy source powers the wind and rain, in Tala's science book?

   • Heat from lava
   • The Moon's pull
   • Earth's inner heat
   • The Sun
9. 9.

   Rock melts into magma deep underground. Which energy source does that, according to Zee's notes?

   • Earth's inner heat
   • Rain seeping down to the magma
   • Wind blowing on the rock
   • Sunlight soaking into the ground
10. 10.

    “Cross-section, not to scale:” Granite buried deep under a mountain range is heated and squeezed into gneiss. What supplies the heat, as Esme explains?

    • The Moon's pull on the mountain
    • Earth's inner heat
    • Rain rubbing on the rock
    • Sunlight warming the mountain