How does absolute age differ from relative age?

B. Only absolute dating finds the age in years

A. Only absolute dating indicates which rock is older than another

C. Only relative dating finds the age in years

D. Both relative and absolute dating find a specific age in years

All of the following are examples of weathering and erosion EXCEPT, ______.

an asteroid impact in the Gulf of Mexico.

water wearing down rocks in a creek bed.

wind damaging a stone cliffside.

rain damaging exposed rocks at a national park. ____

a small part that is meant to show what the whole is like

when people need large parts of something

anything that has mass and takes up space

A gene is __________________.

an instruction for making a protein molecule

the way that animals develop new traits

what allows rocks to become animals

the primary method of transportation between molecules

a graph that uses bars to show how characteristics or values are distributed within a group

a method of studying how agressive different species of snakes can be based on their vocalizations

the smallest unit of measurement for mass

the result of many tests on the variables surrounding the populations of rabbits in an ecosystem

Brown anoles are lizards that live on islands in the Bahamas. They can have legs of different lengths. Lizards with shorter legs are better at climbing trees than lizards with longer legs. This makes lizards with shorter legs better at escaping from the floods that sometimes cover the islands. The diagrams show three possible lizard populations. If their environment changes so that there are many floods each year, which of the following lizard populations will most likely survive?

Populations 1 and 2 will most likely survive.

All the populations will survive because the lizards will change the length of their legs if they need to.

Populations 2 and 3 will most likely survive.

Only Population 2 will survive because it is the only population with variation.

A non-adaptive trait is __________________.

a trait that makes it less likely that an individual will survive in a specific environment

how some organisms get rid of traits that make them sickly

a trait that makes an organism succeed in its environment

when an organism is unable to adapt to an oceanic environment

Harbor seals live in northern oceans and a have layer of blubber (fat) that keeps them warm. Seals can have blubber of different thicknesses. Seals with thicker blubber are more likely to stay warm and survive in cold ocean waters. But, in warm ocean waters, thicker blubber can make the seals overheat and die. The diagrams below show three possible seal populations. If their environment changes to have warm water, which of the following seal populations will most likely survive?

Populations 1 and 2 will most likely survive.

Populations 2 and 3 will most likely survive.

Only Population 2 will survive because it is the only population with variation.

All the populations will survive because the seals will change the thickness of their blubber if they need to.

the way something is shaped or constructed.

the way that people organize data.

how to determine somethings usefulness.

when something does what it is supposed to.

When something is heterozygous that means an organism has ______.

two genes versions that are different.

two gene versions that are the same.

The term Homozygous means ______ in relation to traits. (Select All That Apply)

two gene versions that are the same

two gene versions that are different

The body cells of scorpions have proteins that connect together. In one scorpion, the structure of the proteins in the body cells changed, but the amount of that type of protein in the cell stayed the same. What happened to the function of that type of protein?

The changed protein connects differently, so its function changes.

The changed protein connects differently, but its function doesn’t change.

The changed protein connects in the same way, but its function changes.

The amount of that type of protein stayed the same, so its function doesn’t change.

Henry is studying a family of tree frogs that have poisonous skin, and he finds one frog with a mutation for the poison feature. Which of these statements about the tree frog with the mutation is true?

There must have been a change in the frog’s genes.

There will be no change to the frog’s poison.

The frog must be more poisonous than other frogs.

The frog must be less poisonous than other frogs.

Two sharks have different parents. The two sharks have different proteins in their cells for the dark color on the tip of their fins. What can you say about the color on the tip of the two sharks' fins?

The fins will be a different color since their proteins for fin color are different so the proteins will connect in different ways.

The fins will be the same color since all sharks have the same fin color.

The fins will be the same color because even with different proteins for fin color, the proteins can connect in the same way.

The fins will be different colors since offspring from different parents will have different colored fins.

Which of the following best describes when a genotype is Homozygous?

Having two identical alleles for a particular gene

Having two different alleles for a particular gene

Having more than two alleles for a particular gene

Having no alleles for a particular gene

What is the difference between genotype and phenotype?

Genotype refers to the genetic makeup, while phenotype refers to the observable characteristics.

Genotype refers to observable characteristics, while phenotype refers to the genetic makeup.

Genotype and phenotype both refer to observable characteristics.

Genotype and phenotype both refer to genetic makeup.

8th Grade Science - Semester Final Exam - Fall - 2023-2024

Authored by Cody Napier

Science

8th Grade

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8th Grade Science - Semester Final Exam - Fall - 2023-2024

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50 questions

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MULTIPLE CHOICE QUESTION

30 sec • 2 pts

The Geologic time scale is subdivided into

A. Eons, periods, epochs, eras

B. Eras, eon, periods, epochs

C. Epochs, periods, eras, eons

D. Eons, eras, periods, epochs

Tags

NGSS.MS-ESS1-4

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

Using the information and the geologic time scale below, choose the period that falls within the Mesozoic Era?

A. Cambrian

C. Quaternary

B. Triassic

D. Cenozoic

Tags

NGSS.MS-ESS1-4

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

Which era contains the most complex organisms?

A. Cenozoic Era

C. Precambrian Time

B. Mesozoic Era

D. Paleozoic Era

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

Which event ended the Mesozoic Era?

A. continental drift that changed climate

B. use of fossil fuels by humans

C. extinction of 90% marine life

D. asteroid striking Earth and changing climate

Tags

NGSS.MS-LS4-1

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

Relative Age Dating does all the following EXCEPT :

A. allows scientist to date rock, fossils, and geological events

B. gives a numerical value in years old

C. uses the method of superposition to date rocks

D. uses general terms, such as older and younger

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

______ states that younger rocks lie above older rocks if the layers have not been disturbed?

A. Law of crosscutting relationships

B. Law of superposition

C. Relative Dating

D. Unconformity Use this pictur e to answer questions 11 and 12

Tags

NGSS.MS-ESS1-4

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

Which of the following layers is the youngest layer?

A. Layer E

B. Intrusion D

C. Intrusion H

D. Layer L

Tags

NGSS.MS-ESS1-4

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8th Grade Science - Semester Final Exam - Fall - 2023-2024

The Geologic time scale is subdivided into

Using the information and the geologic time scale below, choose the period that falls within the Mesozoic Era?

Which era contains the most complex organisms?

Which event ended the Mesozoic Era?

Relative Age Dating does all the following EXCEPT :

______ states that younger rocks lie above older rocks if the layers have not been disturbed?

Which of the following layers is the youngest layer?

Which of the following layer is the oldest?

How does absolute age differ from relative age?

How long did the Cenozoic Era last?

Access all questions and much more by creating a free account

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Popular Resources on Wayground

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