Emo Nemo Science Review (for 8th grade)

Question 1

What type of rock is shown labeled in these layers?

Accepted Answer

Sedimentary

Question 2

Which of the following shows how the Moon’s shape could have changed once a week for a month?

Accepted Answer

A

Question 3

what part of the wave are B and F

Accepted Answer

Crest

Question 4

Compared to other stars, the Sun is a

Accepted Answer

medium-sized star

Question 5

Which of the numbers indicates the electrons that could bond with electrons of other atoms?

Accepted Answer

I

Question 6

According to Law of Conservation of Mass, the number of irons needed to complete the reaction

Accepted Answer

4

Question 7

Spiders can make a web the very first try, it's born able to so this. This is an example of

Accepted Answer

an innate behavior

Question 8

Name the first 4 planets in order

Accepted Answer

Mercury, Venus, Earth, and Mars

Question 9

The primary cause of crustal movement is

Accepted Answer

Convections

Question 10

Which of the following diagrams represents Earth’s place in the universe?

Accepted Answer

diagram 3

Question 11

What part of the electromagnetic spectrum can be directly observed by humans?

Accepted Answer

Visible light

Question 12

A girl riding on a skateboard at 3 m/s suddenly hits the curb. The girl will fall . . .

Accepted Answer

forward at a speed equal to 3 m/s

Question 13

Which of the following factors would impact the speed of the waves?

Accepted Answer

Temperature and medium through which the sound is traveling

Question 14

According to the theory of evolution, variations within species are most likely the result of

Accepted Answer

Sexual reproduction and mutations

Question 15

When there are no more living members of a species, that species is said to be

Accepted Answer

Extinct

Question 16

Which type of infection of the human body can most likely be treated with an antibiotic?

Accepted Answer

Bacterial

Question 17

What organism is not correctly labeled with its kingdom? (use the picture shown)

Accepted Answer

C

Question 18

Which of the following statements best identifies Cell X and Cell Y?

Accepted Answer

Cell X is a prokaryotic and Cell Y is a eukaryotic

Question 19

Which term refers to organisms who are better with their environment and are likely to survive?

Accepted Answer

Natural selection

Question 20

When Bulb B burns out, Bulb A

Accepted Answer

gets brighter

Question 21

What is the smallest unit of an element that still has the properties of that element?

Accepted Answer

An atom

Question 22

Which of the following layers of rock is most likely the youngest? The layer containing

Accepted Answer

People, Dinosaurs

Question 23

Which diagram would produce the greatest gravitational force between the two objects?

Accepted Answer

Diagram 1

Question 24

Where are temperatures the highest? ( use the diagram )

Accepted Answer

Downtown areas

Question 25

Which component in the diagram converts chemical energy into electrical energy?

Accepted Answer

Component X

Question 26

Which wave requires a medium for transmission?

Accepted Answer

sound

Question 27

Using the diagram shown, during which year did the population reach its carrying capacity?

Accepted Answer

3 years, 1095 days

Question 28

The process of choosing parent organisms for desired characteristics is called...

Accepted Answer

artificial selection.

Question 29

In the food web above which organism would have the largest population?

Accepted Answer

Raspberry bush

Question 30

Producer population decreases, which option is an immediate effect caused by that decrease?

Accepted Answer

The grasshopper population would decrease

Question 31

Soil made of which particle sizes allows the most amount of water retention during a drought?

Accepted Answer

A

Question 32

Which of the following statements is the best description of the train’s motion? The train

Accepted Answer

Is moving with a constant velocity

Question 33

Which of the following human activities reduces biodiversity?

Accepted Answer

Planting a type of tree to replace forests cut for lumber

Question 34

Our solar system is referred to as heliocentric, that means the Earth

Accepted Answer

revolves around the Sun

Question 35

Which mineral would be weathered most after being placed in a rock tumbler for fifteen minutes?

Accepted Answer

Gypsum

Question 36

Distance is represented by “d”.Which diagram shows the greatest force between the two objects?

Accepted Answer

Option B

Question 37

What is the net force on the object and in what direction would the object move?

Accepted Answer

100 N upwards

Question 38

Which of the following best describes the function of the system?

Accepted Answer

Exchanges gasses with the environment

Question 39

When salt dissolves in water, the water is the

Accepted Answer

solvent

Question 40

Which is not a contributing factor to the uneven warming of Earth’s surface? (Use the diagram)

Accepted Answer

The Sun is farther from Earth during the winter

Question 41

Fossils are most commonly preserved in

Accepted Answer

sedimentary rock

Question 42

Shellfish fossils are often found in Las Vegas Valley.What do you think this area used to have?

Accepted Answer

It once contained a shallow sea

Question 43

Which of the following allows humans on Earth to experience day and night?

Accepted Answer

Rotation

Question 44

A horse is walking at a constant speed of 2 m/s. How far will the horse get in thirty minutes?

Accepted Answer

3600 m

Question 45

What is Process B in this diagram?

Accepted Answer

Osmosis through the cell membrane, Gametes

Question 46

Select the order that represents how succession progresses in an ecosystem.

Accepted Answer

IV, II, I, III

Question 47

A sheet of ice would float on a freshwater lake because ice

Accepted Answer

is less dense than water

Question 48

How much of Nevada’s energy usage comes from nonrenewable resources?

Accepted Answer

93.2%

Question 49

Clouds usually form on the windward side because this is where air

Accepted Answer

rises and cools

Question 50

How does decreasing the number of turns of the wire affect the strength of the magnetic field?

Accepted Answer

Makes it weaker

Question 51

White is a helpful adaptation for animals living near the North Pole because of it...

Accepted Answer

provides camouflage for the environment.

Question 52

This next section will be about physical science

Accepted Answer

Science, Good luck, All of the answers are correct, just pick one, Physical Science

Question 53

If the Earth were twice as massive, then the gravitational force between it and the sun would

Accepted Answer

Be twice as great

Question 54

This next section will be about earth science

Accepted Answer

Science Words, Earth Science, All these answers are correct, I like rock

Question 55

Which of the following is the correct ranking of organisms from simplest to most complex?

Accepted Answer

cells, tissues, organs, organ systems, organisms

Question 56

Someone put sand, clay, and water into a bottle and let it sit for awhile.What can we conclude?

Accepted Answer

The layer of sand is denser than the other layers

Question 57

At which two numbered positions is the potential energy of the pendulum most likely the same?

Accepted Answer

position 1 and 3

Question 58

The fossil records support Darwin’s theory of evolution, demonstrating that plants and animals

Accepted Answer

have changed over time

Question 59

The two most abundant greenhouse gasses in Earth’s atmosphere are

Accepted Answer

water vapor (H2O) and carbon dioxide (CO2)

Question 60

When determining a region’s climate, the two main variables considered are the average

Accepted Answer

precipitation and average air temperature

Question 61

This section is about 6th-grade life science

Accepted Answer

All the answers here are correct and nothing matters, Life Science, Life Science

Question 62

Convection in the oceans and atmosphere is a result of the difference in

Accepted Answer

temperature

Question 63

What planet has the shortest orbit around the Sun?

Accepted Answer

Mercury

Emo Nemo Science Review (for 8th grade)

Questions 63

Emo Nemo Science Review (for 8th grade)

Questions 63