How are they related?
Changes
Rocks
Factors
Classify
100
True/False: Two very different organisms would have similar genes if they had a common ancestor.
What is true.
100
We've heard about mutations from various sources, and they sound bad. How can a mutation be helpful to a species?
What is by helping it to survive. A moth that gets a mutation making it a different color can help it to blend in better with other surroundings. If it survives, it passes the mutation on, and it continues until there's either two different species (one that has the mutations and one that doesn't, as the mutation might not be crucial to survival) or the whole species ends up that color.
100
How is radiometric dating used to figure out the age of a rock?
What is it measures how many half lives of a radioactive material have gone by. Knowing how long one half life is, they can then calculate how old the rock is.
100
In a habitat where rabbits live, the temperature drastically decreases. If there is a variation in the population for thicker fur, how will the rabbit population evolve?
What is the rabbits with the thicker fur variation will pass the genes coding for the thicker fur to their offspring, while the rabbits with normal fur will start dying out, so eventually, all the rabbits will have thicker fur coats.
100
How do scientists decide where to put animals when they classify them?
What is by the similarities and differences in their functional and physical traits.
200
What are the different ways to collect evidence that two organisms had a common ancestor?
What is embryological likeness, anatomical evidence, DNA analysis, fossil record, and biochemical likeness.
200
Genes are what codes for certain traits an individual can have. What kind of factors can change that individual so that they don't reach the full extent of what the genes code for? (Think about someone whose genes say they are going to be very tall, but they end up about average height.)
What is environmental factors. With the height example, this could be a variety of things, including not enough to eat, bad nutrition, etc.
200
In the Cascade Mountains, what kind of geological events would you be able to find evidence of? What kind of process created the Cascade Mountains?
What is you would be able to find evidence of volcanic eruptions, floods, etc. The Cascades were created by the pressure of the Juan de Fuca plate being pushed under the North American plate.
200
If there are a group of shorebirds that all live in the same area and all eat the same prey (which is in short supply), how might the shorebirds adapt so they don't die out?
What is they will (through variation) eventually end up with different types of beaks and legs so they will be able to hunt the prey that lives in different areas, allowing there to be enough of the prey for all the birds.
200
What trait identifies this class, to which a grizzly bear, black bear, giant panda,red fox, and a squirrel belong?
What is they are all mammals.
300
What evidence would you use to determine if seals and seal lions could have evolved from a common ancestor?
What is DNA similarities and/or the fossil record.
300
Explain how giraffes who used to have short necks now have very long necks.
There was a variation that some of the giraffes had where they had longer necks. Since these giraffes were able to reach food easier, they survived easier and passed the gene for the longer neck to their offspring. Eventually, giraffes with shorter necks couldn't reach their food, and they died out, leaving the remaining giraffe population with long necks.
300
A cliff in the desert has a lot of land animal fossils that are all together in one layer. The layer above it has fossils of fish and plants that live in, or very close to, water. Given this information, what can you predict happened that made that first layer of animals all die out so quickly?
What is a flood or tsunami.
300
There is a group of rabbits, the prey of wolves. Their habitat is forest, where there's a lot of brown. By natural selection, what would survive better-- gray rabbits or white rabbits?
What is the gray rabbits. Gray blends in more with brown, whereas white stands out. The wolves would be able to see the white rabbits easier, so more of the white rabbits would die than gray rabbits.
300
You have a group of animals: a leopard, a cheetah, a crow, a cat, a dog, an alligator, a snake, a mouse, a shark, a sea otter, an elephant, and a kangaroo. Sort these into two categories, and say what the categories are.
What is having fur (leopard, cheetah, cat, dog, mouse, sea otter, kangaroo) and having no fur (crow, alligator, snake, shark, and elephant).
400
If you look at a diagram of a whale fin, a human arm, a cat leg, and a bat wing, they have the same structure, and look very similar. What kind of evidence is this? What does this mean?
What is anatomical evidence that they had a common ancestor somewhere, and are all related.
400
How did elephants evolve from their ancient times (where they had hair/fur) to what they look like in modern times?
What is by genes and environmental factors. As temperatures got warmer, variations for less and less hair helped them survive, and they ended up with no hair.
400
What is a half-life? How do we use these?
A half life is the amount of time it takes for half of an unstable parent element to decay into a stable daughter element. We use these in radiometric dating to determine how old rocks are.
400
A species of rabbits is gray. One rabbit gets a variation for brown fur, which helps it survive easier. Which of the following happens? a) the gene for brown fur is passed to that rabbit's offspring b) the rabbit has offspring with gray fur, nothing happens c) the gene for brown fur is passed to that rabbit's offspring, and none of the gray rabbits survive d) the brown fur gene is passed on to that rabbit's offspring, and to their offspring, etc. while the gray rabbits start to die out because they're easier to see, leaving the rabbit population eventually brown
What is d
400
You have a snake, elephant, giraffe, butterfly, frog, hawk, and a tiger. Classify them into two groups.
What is those who eat meat (snake, frog, hawk, tiger) and those who don't (elephant, giraffe, butterfly).
500
The fossil of an Archaeopteryx looks similar to fossils of dinosaurs (it has a 3-clawed hand like theropod dinosaurs), but has distinctive impressions of feathers. What does this mean?
What is the Archaeopteryx is the link between dinosaurs and birds, showing through anatomical evidence that the two are related.
500
Does a living species ever stop changing?
What is no. There are constantly new adaptations, variations, and mutations that change the population, as well as new predators (selective pressures) and new environmental factors to change to.
500
A mountain range was created by one plate being forced under another. Describe in detail how the mountain range was formed, from the beginning.
What is a small plate collides with a larger plate. The smaller plate is slowly forced under the larger plate. The pressure from where the small plate is forces the larger plate to buckle upwards. Eventually, this forms mountains.
500
If there is a population of frogs in a pond, and the frogs suddenly have a population boom, but the amount of prey (flies) stays the same, what will happen to the frogs?
What is the population will go back down. There won't be enough flies to feed all of the frogs, so many will starve to death, causing the population to go back down.
500
Sand dollars can be different colors- dark purple or dark brown, depending on what species they are. Why would the different species of sand dollars have evolved to be different colors?
What is to camouflage. Different species live in different types of mud and sand, so they evolved with different colors so they could match their surroundings to avoid getting eaten.
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