Geology gets investigative here. A hiker spots shell fossils pressed into stone (sedimentary), a student tests a mineral that leaves a red-brown streak on a tile, and granite transforms into gneiss under deep heat and pressure. Students explain why granite grows larger crystals than basalt by cooling slowly underground.
Fill-ins cover conglomerate's rounded pebbles held by natural cement, the layered walls of the Grand Canyon, fluorite's hardness of 4, and ice-wedging as physical weathering. Slate's flat sheets even explain old chalkboards. Fourth graders practice using clues like crystal size, streak, and fossils the way real geologists do.
Style:
Rocks and Minerals
Part A: Multiple Choice
Circle the best answer for each question.
1. A hiker finds a rock with visible shell fossils pressed into it. What type of rock is it?
A) igneous
B) sedimentary
C) metamorphic
D) volcanic glass
2. Which process would change granite into gneiss?
A) weathering and erosion
B) melting and rapid cooling
C) heat and pressure deep underground
D) compaction and cementation
3. Why does granite have larger crystals than basalt?
A) Granite contains different minerals
B) Granite cools slowly underground giving crystals more time to grow
C) Basalt forms deeper in the Earth where there is more pressure
D) Basalt contains more water which prevents crystal growth
4. A student rubs a mineral on a white tile and gets a red-brown powder. Which mineral property was tested?
A) hardness
B) luster
C) streak
D) cleavage
Part B: Fill in the Blank
Write the correct answer on each line.
1. Conglomerate is a sedimentary rock made of rounded pebbles held together by natural cement.
2. The Grand Canyon shows many layers of sedimentary rock built up over millions of years.
3. Fluorite has a hardness of 4 on the Mohs scale.
4. When water seeps into rock cracks and freezes, it expands and causes physical weathering.
5. Slate was once used to make school chalkboards because it splits into flat sheets.
Rocks and Minerals
★ Part A: Multiple Choice
Circle the best answer for each question.
1. A hiker finds a rock with visible shell fossils pressed into it. What type of rock is it?
A) igneous
B) sedimentary
C) metamorphic
D) volcanic glass
2. Which process would change granite into gneiss?
A) weathering and erosion
B) melting and rapid cooling
C) heat and pressure deep underground
D) compaction and cementation
3. Why does granite have larger crystals than basalt?
A) Granite contains different minerals
B) Granite cools slowly underground giving crystals more time to grow
C) Basalt forms deeper in the Earth where there is more pressure
D) Basalt contains more water which prevents crystal growth
4. A student rubs a mineral on a white tile and gets a red-brown powder. Which mineral property was tested?
A) hardness
B) luster
C) streak
D) cleavage
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) Conglomerate is a sedimentary rock made of rounded pebbles held together by natural cement.
2) The Grand Canyon shows many layers of sedimentary rock built up over millions of years.
3) Fluorite has a hardness of 4 on the Mohs scale.
4) When water seeps into rock cracks and freezes, it expands and causes physical weathering.
5) Slate was once used to make school chalkboards because it splits into flat sheets.
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9 Questions
12-18 minutes
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