3rd Grade Science Term 1- Rocks

A student is testing some rocks she found. She scratches them with the following tools: fingernail, penny, knife, glass plate. If a rock can be scratched with the fingernail, what can be said about that rock?

• It is a soft rock.

• It is a shiny rock.

• It is a metallic rock.

• It is a magnetic rock.

A student wants to identify a mineral sample. The table shows the hardness scale she uses.

The student scratches objects in the table with the sample. The sample can scratch Calcite but can itself be scratched by Apatite. What is the sample?

• Topaz

• Quartz

• Fluorite

• Gypsum

Which sentence about rocks and minerals is true?

• Minerals can be made of many types of rock.

• Rocks can be made of many types of minerals.

• A rock can only be made of one type of mineral.

• A mineral can only be made of one type of rock.

Which question is a scientist most likely asking if she is classifying a rock based on its luster?

• How old is this rock?

• How hard is this rock?

• How large is this rock?

• How shiny is this rock?

What are the four attributes of rocks?

• metals, minerals, crystals, rocks

• metamorphic, sedimentary, igneous, transformation

• color, texture, hardness, luster

• weight, shape, color, luster

What are the classifications of this rock?

• Smooth texture, shiny luster

• Rough texture, dull luster

• Smooth texture, dull luster

• Rough texture, shiny luster

What are the rocks classifications.

• smooth texture, shiny luster

• rough texture, shiny luster

• rough texture, dull luster

• smooth texture, dull luster

What are the rocks classifications?

• smooth texture, dull luster

• rough texture, dull luster

• rough texture, shiny luster

• smooth texture, shiny luster

What are the classifications of this rock?

• rough texture, shiny luster

• rough texture, dull luster

• smooth texture, dull luster

• smooth texture, shiny luster

Which question can scientists answer just by looking at the rocks?

• Which rock is harder?

• Which rock is heavier?

• Which rock has a smoother surface?

• Which rock acts as a stronger magnet?