Focus On Life Science: California Grade 7

Chapter 8: The History of Life on Earth

Standard Assessment

1.
A direct result of global warming, as opposed to an indirect result, is __________. 4.b
A)melting glaciers
B)increased global temperatures
C)coral bleaching
D)increased flooding
2.
What is believed to have caused mass extinction at the end of the Cretaceous Period? 4.b
A)global cooling
B)volcanic activities
C)asteroid impacts
D)floods
3.
What is the name of the gas in car exhaust that helps heat up our atmosphere? 4.b
A)hydrogen
B)oxygen
C)water vapor
D)carbon dioxide
4.
Which of these can affect climate and organisms? 4.b
A)global warming
B)volcanoes
C)global cooling
D)all of the above
5.
Climate is the pattern of __________ in an area over many years. 4.b
A)rain
B)plants
C)weather
D)sun
6.
Which of the following is NOT a description of the current view of dinosaurs? 4.g
A)nurturing their young
B)warm-blooded
C)fast-moving
D)cold-blooded
7.
What are Ediacara life-forms? 4.g
A)direct ancestors of Cambrian life-forms
B)no one knows for sure
C)unique organisms that went extinct
D)alien life-forms
8.
Why is the Precambrian fossil record so sparse? 4.g
A)There were no living things.
B)Vertebrates developed then.
C)Many of the organisms had soft bodies.
D)All organisms lived on land.
9.
What occurs at the end of a geologic era? 4.b
A)an extinction
B)a flood
C)a comet hitting Earth
D)a mountain-building event
10.
What was Pangaea? 4.g
A)a geologic era
B)the original name for North America
C)a type of trilobite
D)a large, single landmass
11.
When did Pangaea break up? 4.g
A)in the Cenozoic Era
B)in the Mesozoic Era
C)in Precambrian time
D)in Archean time
12.
__________ are ancestors of reptiles. 4.g
A)Birds
B)Mammals
C)Amphibians
D)Dinosaurs
13.
Where did the oxygen in Earth's atmosphere come from originally? 4.g
A)from rocks
B)from plants
C)from animals
D)from cyanobacteria
14.
Which of the following is a species common during the Paleozoic Era? 4.g
A)dinosaurs
B)trilobites
C)Homo sapiens
D)Ediacara life-forms
15.
What geologic era do you live in? 4.g
A)Paleozoic
B)Mesozoic
C)Cenozoic
D)Precambrian
16.
What types of animals dominate the Cenozoic Era? 4.g
A)mammals
B)dinosaurs
C)reptiles
D)trilobites
17.
The longest section of Earth's history was __________. 4.g
A)Cenozoic Era
B)Cretaceous period
C)Paleozoic Era
D)Precambrian time
18.
During the first billion years of Earth's history, ___________. 4.g
A)there was life everywhere
B)there was no life
C)trilobites evolved
D)vertebrates evolved
19.
Order the divisions of geologic time from the longest to the shortest. 4.g
A)eons, epochs, eras, periods
B)eons, eras, periods, epochs
C)periods, epochs, eras, eons
D)epochs, periods, eras, eons
20.
What is NOT a characteristic of mammals? 4.g
A)hair or fur
B)warm-blooded
C)cold-blooded
D)produce milk to feed young
Grade 7
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe