Fossils and Rocks
Evolution
Embryos
Who's Related?
WOW Words
100
What is a method used to identify the approximate age of a rock layer by determining the ages of the layers above and below it
What is relative dating
100
What was the first organism recorded, according to this chart?
What is single-celled embryotes?
100
What is the development of an animal that hasn't hatched or been born yet and is in the earliest stages of growth when its basic structures are being formed
What is an embryo
100
What is one piece of evidence we can use to see if two organisms are related or share a common ancestor?
What is embryonic development, skeletal structure, cladogram
100
What is a scientist who studies the fossils of prehistoric organisms
What is a paleontologist
200
What color is the oldest fossil?
What is grey
200
What came first, Jellyfish or Worms?
What is Jellyfish
200
In embryonic development, embryos are usually more (curled up or straight) in the beginning, and progress to being more (curled up or straight) as they progress
What is curled up (1), straight (2)
200
Which two are more closely related?
What is the first two (Archaeopteryx and Chicken)
200
What is an organism preserved in rock that is common in a particular time or environment and used to help identify geological periods
What is index fossil
300
What is one piece of evidence that a mass extinction may have occured?
What is layer of rock with no fossils, different organisms after
300
Which two are more closely related and WHY
What is the last two - backbone, skull
300
What is the process by which an embryo forms and develops
What is Embryonic development
300
What is one piece of evidence for why the first two are more closely related?
What is long S-shaped necks, similar hindlimb structure, similar feet, wings
300
What is the dying out of a large number of organisms over a relatively short period of time
What is mass extinction
400
What color is the youngest fossil?
What is orange
400
What develops in ALL of these organisms from mid to late embryo
What is limbs, fingers/toes, more developed tail
400
Which two are more closely related?
What is the last two
400
What is a species from which two or more species have descended?
What is a common ancestor?
500
What is the process by which the age of a fossil or rock is determined through measuring the decay or radioactive isotopes
What is radiometric dating
500
What is one piece of evidence as to why the last two are more closely related?
What is large round head, large eyes, vertebrate, limbs
500
What is the gradual change in living things over many generations, due to changes in inherited traits
What is evolution