1. Select the odd one out.
a)
b)
c)
d)
Answer: c) Coal is a soft rock whereas the rest are hard rocks.
2. Alexis is trying to classify rocks based on their similarities. Help her by placing the rock shown in the picture in the appropriate group.
a) Talc, slate
b) Granite, pumice
c) Marble, slate
d) Sandstone, limestone
Answer: b) Obsidian is an igneous rock similar to granite and pumice.
3. Which of the following minerals is used to make the object shown in the picture?
a) Silica
b) Coal
c) Talc
d) China clay
Answer: a) Silica is used to make glass windows and other objects.
4. Match the following.
Column I | Column II |
1. Igneous rocks | A) Formed when existing rocks undergo high heat and pressure |
2. Sedimentary rocks | B) B) Formed from the cooling of lava |
3. Metamorphic rocks | C) Formed through the cementation of sediment particles |
a) 1:A, 2:C, 3:B
b) 1:C, 2:A, 3:B
c) 1:A, 2:B, 3:C
d) 1:B, 2:C, 3:A
Answer: d)
Igneous rocks: Formed from the cooling of lava
Sedimentary rocks: Formed through the cementation of sediment particles
Metamorphic rocks: Formed when existing rocks undergo high heat and pressure
5. Julie’s mom got a necklace made of a shiny expensive mineral shown in the picture. Identify the mineral.
a) Quartz
b) Diamond
c) Silica
d) Graphite
Answer: b) Diamonds are a popular choice for making jewellery due to their appeal and high value.
>> Join CREST Olympiads WhatsApp Channel for latest updates.
If your web browser doesn't have a PDF Plugin. Instead you can Click here to download the PDF
>> Join CREST Olympiads WhatsApp Channel for latest updates.
In this section, you will find interesting and well-explained topic-wise video summary of the topic, perfect for quick revision before your Olympiad exams.
>> Join CREST Olympiads WhatsApp Channel for latest updates.