8 grade MIDTERM EXAM

Approximately how old is Earth?

• a.      4.5 trillion years old

• b.     4.5 billion years old

• c.      4.5 million years old

• d.     450,000 years old

Tags

NGSS.MS-ESS1-4

     Which answer below correctly listed the time units from largest to smallest?

• a.      Eon, era, period, epoch

• b.     Era, eon, epoch, period

• c.      Period, eon, era, eon

• d.     Era, period, eon, epoch

Tags

NGSS.MS-ESS1-4

  During which time did NO life exist on Earth?

• a.      Hadean Eon

• b.     Archean Eon

• c.      Proterozoic Eon

• d.     Phanerozoic Eon

    When did multicellular life emerge on Earth?

• a.      Hadean Eon

• b.     Archean Eon

• c.      Proterozoic Eon

• d.     Phanerozoic Eon

1.        How did scientists divide Earth’s history?

• a.      Based on development of physical features of Earth

• b.     Based on the emergence of life forms on Earth

• c.      Based on the disappearance of life forms on Earth

• d.     All of the above

Tags

NGSS.MS-ESS1-4

1.        Life FIRST appeared on Earth:

• a.      Around 3.8 billion years ago

• b.     Around 3.8 million years ago

• c.      Around 380,000 years ago

• d.     Around 38,000 years ago

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

1.        What life forms were responsible for the Great Oxygenation Event?

• a.      Anaerobic microbes

• b.     Cyanobacteria

• c.      Ferns

• d.     Flowering plants

1.        Relatively speaking, how would you describe the emergence of multicellular life?

• a.      Multicellular life arose extremely slow

• b.     Multicellular life arose slow and steadily

• c.      Multicellular life arose quickly, but it took a long time for it to diversify

• d.     Multicellular life exploded rapidly and quickly diversified

1.        The first multicellular life forms on Earth were:

• a.      Simple invertebrates

• b.     Small mammals

• c.      Flowering plants

• d.     Humans

1.        What is extinction?

• a.      The emergence of a new species

• b.     The complete loss or death of a species

• c.      The decline of a species

• A type of natural disaster

Tags

NGSS.MS-LS4-1