1. Under which of the following conditions would a fossil most likely form? (1point)
a. A living thing dies and sediment is very slowly deposited on top of i’s body.
b. A living thing dies and sediment quickly covers its body. <-
c. A living thing dies and its skeleton is left to the elements.
d. A living thing dies and a radioactive element breaks down its body.
2. If you were looking for an example of a trace fossil, for which of the following might you search? (1point)
a. Footprints and trails <-
b. A whole body preserved in rock
c. Dinosaur teeth
d. A hardened mineral sample
3. What does the law of superposition tell about the relative ages of rocks? (1point)
a. That the deeper you go into rock layers, the older the rocks are <-
b. That the deeper you go into rock layer, the younger the rocks are
c. That the oldest rock layer is always on top
d. That the oldest rock layer is always undisturbed
4. After a rock layer is eroded, which additional event must occur to create an unconformity, or gap, in the geologic record? (1 point)
a. An earthquake or motion along a fault
b. New sediment deposits build up on the eroded area <-
c. Radioactive decay along a fault
d. A volcanic eruption near the eroded area
5. Radioactive decay occurs when atoms (1 point)
a. Lose mass
b. Join with atoms of another element
c. Break down to form atoms of another element <-
d. Are exposed to chemical weathering
6. If you were to consult the geological time scale for when the first vertebrates evolved, where would you look? (1 point)
a. In the section for the Ordovician period of the Paleozoic era <-
b. In the section for the Quaternary period of the Cenozoic era
c. In the section for the Triassic period of the Mesozoic era
d. In the section for Precambrian time
7. Earth’s atmosphere, oceans, and continents began to form during the first several hundred years of (1 point)
a. Precambrian time
b. The Paleozoic
c. The Mesozoic era <-
d. The Cenozoic era
8. During the Devonian period, animals that could live on land began to evolve. These animals still spent part of their lives in the water. What were these animals called?
a. Trilobites
b. Reptiles <-
c. Amphibians
d. Dinosaurs
9. Which of the following events occurred during the Mesozoic era? (1 point)
a. Dinosaurs became common on land <-
b. Whales and dolphins evolved in the oceans
c. Reptiles evolved on land
d. The supercontinent Pangea formed
10. Which of the following vertebrates had the chance to become abundant after the dinosaurs became extinct? (1 point)
a. Wooly mammoths
b. amphibians
c. mammals
d. reptiles <-
11. Which of the following organisms is not extinct? (1 point)
a. The dodo bird
b. The saber-toothed tiger
c. The saltwater crocodile <-
d. The Carolina parakeet
12. During which section of the geologic time scale did the first modern humans evolve? (1 point)
a. During the Paleogene period of the Cenozoic era
b. During the Quaternary period of the Cenozoic era <-
c. During the Cretaceous period of the Mesozoic era
d. During the Precambrian time
13. If the geologist found two fossils of different species buried next to each other in a rock layer, he or she might hypothesize that the two organisms may have been alive during the same period.
a. True <-
b. False
14. A species might become extinct when a disastrous event, such as a meteorite impact, occurs. (1 point)
a. True <-
b. False
1.b
2.a
3.a
4.b
5.c
6.a
7.a
8.c
9.a
10.c
11.c
12.b
13.true
14.true
100% correct for CA
You idiots it's "They're right".
The people on this website are incompetent, it's obvious, but you don't have to grammar police them.
your 1000000090% percent right DAWG
The half-life of strontium-90 is 28.8 years. This means that if you have 60 strontium-90 atoms, in 28.8 years you will be left with 30 strontium-9
He's right
deadass hes right rawr xd
what bout the short answers?? ik im stupid but i need help, plz help me
!REMEMBER TO REWORD EACH ANSWER! |
-------------------------------------------------------------
Q16 Answer:
The half-life of strontium-90 is 28.8 years. This means that if you have 60 strontium-90 atoms, in 28.8 years you will be left with 30 stronium-90 atoms left.
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Q17 Answer:
Because of how long the Earth has been alive, geologists use the geologic time scale to organize how far down the fossils or artifacts are. The geologic time scale shows the rocks and crust and how everything looked in the past times.
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idk Q15
how about 15,16,and 17 need those answers
Geologic Time Scale is the most relative time scale which records the time intervals on
Earth corresponding to each other in succession. It is used by geologists to
tell Earth’s history because it conforms to the order of Earth’s development
with respect to dividing time in terms of Earth’s biotic composition representing
various life forms.
I mean kk decided to correct him first, but I agree. Don't try and correct someone if you're wrong yourself.
Thanks for the answers peeps~A.T.
B and D must compare in age because D must be older than B is because I know this I can infer that D must be at least as old as B is. The boundary between B and D is called an uncomformity
Is this right? :D
Thank you so much! Got 100% on the test!
Can you give me # 17 anyone, but the right # 17 PLEASE
I need help for 15,16 and 17
REWORD IT
15-
Layer D is older than layer B. If rock layers between B and D have eroded away, the boundary between B and D are called, an unconformity
you got the wrong test brother
He right
QUESTION 15:
I believe that Layer D is older than layer B, even though it is shorter. Since the rock layers between B and D have deteriorated away, the dividing line between B and D would be called an unconformity. (I copy pasted so i changed it a bit, but change it yourself aswell just incase!!!)
Your welcome if you get this right! and sorry if u didnt
HAPPY NEW YEAR
7 is wrong
10. I'm not sure.
The others are correct.
Are those the right answers
yes he is right
Sameeee
Sorry wrong spelling unconformity
ur ganna tell on a person who was in 6th grade... 3 or 2 years ago... and ur bearly in 6th in rn..
What’s the last questions
OMG ty ty ty ty I would've failed
Thanks I passed!!!
Thanks
um thx ig i still dont kow what 15 16 and 17 is but ig :|
Your cheating by being on this site during a test Vanessa. Just be real with yourself .. oh yeah and please tell on me , who am I?
i need the short answers
100% Answers is correct
go daddy
wait is this for usa testprep cause i got 20 question
lmao yall are snitches af x_X
me to thanks
15 PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
all of you are connexus BTW! I use this to Check my answer's not to Cheat them.
Most of you are in my class this year, I know ya'll and i ain't afraid to tell, please use this responsibly.
Vanessa!
So I agree with you. It looks like 7 is wrong and ten is wrong. Work on those again ill be happy to check your answer. @100% answer, you shouldn't have gave him/her the answer. Kids need to learn how to do things by given help not the flat out answer. Please next time, dont do it. @Blue was the imposter, thank you for telling us but next time, try to figure it out, its like a videogame, you cant get the full answer, you just get hints. I know I know you alla re gonna say "but you're on this page, and, stop it your fake #faketeacher" but know, I'm on this page to help you all, and I'm not fake.
How do we know there a he....There right.
The first five are all correct.
I'll be back later to check others.
Their right
not there