HARD
Lower Secondary Stage 7
IMPORTANT
Earn 100

Basalt is an igneous rock formed in this way.

Question Image

Cross-section of a volcano

Look at above figure, would you expect rocks with small crystals to form at A, B, or C? 

Important Questions on The Earth

HARD
Lower Secondary Stage 7
IMPORTANT

Basalt is an igneous rock formed in this way. 

Question Image

Cross-section of a volcano.

Would you expect rocks with large crystals to form, at A, B, or C?

 

HARD
Lower Secondary Stage 7
IMPORTANT
Explain why granite has large crystals and basalt has small crystals?
HARD
Lower Secondary Stage 7
IMPORTANT

The layers of sandstone at Uluru (figure given below) contain many fossils of sea animals. How did these fossils get to the middle of Australia?

Question Image

Uluru(Ayers Rock), a huge sandstone rock in the middle of Australia.

 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Could marble contain fossils? Why?
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Describe how igneous rocks are changed into metamorphic rocks?
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Fossils are often found in sedimentary rocks. Why are not they found in igneous rocks?
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Different layers of sedimentary rock have different fossils. In which layer would you expect to find the oldest fossils?
HARD
Lower Secondary Stage 7
IMPORTANT
Squid are soft-bodied sea creatures. Why would squid fossils be difficult to find?