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7th grade science unit 12

Authored by Mrs Liimatta

Other Sciences

7th Grade

33 Questions

Used 5+ times

7th grade science unit 12
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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The largest mass extinction in the Phanerozoic eon happened at the end of the  

Mesozoic Era (during the Cretaceous period) 
Paleozoic Era (during the Permian period) 
Cenozoic Era (during the Quaternary period)
Late Proterozoic Era (during the Precambrian period 

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of life was most common during the Paleozoic Era?  

Marine life
Reptiles
Mammals
No life

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of life was most common in the Mesozoic era? 

Marine life
Reptiles
Mammals
No life

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the main sources of the gasses that first made up the earth's atmosphere?

Volcanoes and ice-covered comets
Clouds of gasses in space that the earth passed through
Hydrogen and helium escaping from the sun and getting trapped in the earth's gravity
There was no atmosphere until life evolved and began producing gasses.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of life was most common in the Cenozoic Era

Marine life
Reptiles
Mammals
no life

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the solar nebula?

The cloud of dust and gas that eventually produced the sun
The sudden, rapid and intense variation in brightness that occurs on the surface of the sun
The effect the sun has on the planets that orbit it
The materials found at the very center of the sun

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Before the solar nebula became the sun it

contracted, began to spin and formed a disc
expanded from a small mass of material until it reached its present size
exploded into a huge burning mass of carbon
completely disintegrated  

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