
Geology Lesson 1: Earth's Layers
Presentation
•
Science
•
7th Grade
•
Practice Problem
•
Medium
Standards-aligned
Isabel Canizares
Used 31+ times
FREE Resource
15 Slides • 22 Questions
1
2
Open Ended
Gratitude Moment
Okay so today's lesson focuses on Earth's guts. Thinking about the outer surface of Earth - which 2 countries or locations in the U.S. would you really like to visit someday?
3
4
Open Ended
Please share something you found more interesting from the video. Also share any interesting thoughts of what you think the inside of Earth is like!
5
6
Density = mass/volume
It's basically the amount of stuff in a certain amount of space
Muscle is more dense than fat (if have 1 cubic cm of each, muscle would have a higher mass)
7
Multiple Choice
Put the liquids in order from most dense to least dense?
4, 3, 2, 1
1, 2, 3, 4
3, 4, 2, 1,
4, 3, 1, 2
8
Multiple Choice
Which box has a higher density?
Box A because the molecules are more tightly packed
Box B because the molecules are more spread out
Box A because it has more volume
They are the same density
9
Crust (outside)
Mantle
Outer Core
Inner Core (inside)
Mnemonic trick to remember: I (inner core) Owe (outer) Ms. (mantle) C. (crust)
10
Multiple Choice
Which layer in the image is the crust?
Hit the back button if you don't remember! Don't forget to enlarge the image if it is too small to see!
1
2
3
4
11
Thinnest layer
Uppermost layer
Least dense layer
Our houses and school are built on top of it =)!
12
Continental Crust: made mostly of granite & is about 18 miles/30 km thick
Oceanic Crust (Earth's surface under the ocean): made mostly of basalt & is about 6 miles/10 km thick
Oceanic crust is more dense - more mass for the same volume!
13
Multiple Choice
Which labeled layer would represent the oceanic crust?
Hit the back button to review & enlarge the image to help you see it!
A
B
C
D
E
14
Multiple Choice
Which type of crust is more dense? Go back to slide 12 if unsure!
Continental Crust
Oceanic Crust
PB&J Crust
15
Multiple Choice
Which of Earth’s layers has the lowest density?
Crust
Inner core
Mantle
Outer core
Umm it can't be crust as we have only learned about the crust. Huh...or could it be the crust?!
16
Made up of the crust & the top of the next layer, the mantle - please look at the diagram as kiddos get this confused!
The upper mantle is made of different stuff than the crust, but the upper upper mantle is "married" to the crust. They stick together.
17
Multiple Choice
What is the lithosphere made up of?
crust
crust & upper upper part of the mantle
can you please give me chocolate for answering this question! i know you have some or are buying more!
18
Multiple Choice
Which labeled layer would represent the lithosphere?
A
B
C
D
E
19
Lithosphere is basically floating on top of the asthenosphere
Asthenosphere moves and flows because of Earth's heat & what it is made of
20
Asthenosphere is considered a solid, but yet it flows & moves due to heat
The asthenosphere is NOT made of cornstarch and water, but it acts similarly!
If you missed playing with it in class, please watch the video!
21
Narrator incorrectly uses the term crust - it is the LITHOSPHERE (crust & upper mantle) that's being moved by the ASTHENOSPHERE underneath
Please note the scale is off - the asthenosphere is MUCH THINNER
However I like this to help you visualize what is happening underneath you!
22
Multiple Choice
In which of the Earth's 4 main layers is the asthenosphere located?
You might need to go back 3 slides to review this answer!
inner core
mantle
outer core
crust
23
Multiple Choice
Which labeled layer would represent the asthenosphere?
A
B
C
D
E
24
Poll
Would you rather???
Be able to teleport anywhere
Be able to read minds
25
Contains lithosphere, asthenosphere
Thickest layer - 84% of Earth's volume!
Average temperature is 3000 C = 5432 F (temperature is increasing)
This visual does a great job showing the asthenosphere compared to the rest of the mantle!
26
Multiple Choice
Which layer in the image label the mantle?
Hit the back button if you don't remember! Don't forget to enlarge the image if it is too small to see!
1
2
3
4
27
Outer Core is liquid iron and nickel that is flowing and moving
Inner Core is solid iron and nickel, the HOTTEST layer (9392 F) & most DENSE & has most PRESSURE (3.6 million atm vs. 1atm at the surface)
Magnetic field (N & S Pole) is caused by Earth's core!
Please make sure to watch the video but the fundamental ideas you need are above!
28
Multiple Choice
Which layer in the image label the outer core?
Hit the back button if you don't remember! Don't forget to enlarge the image if it is too small to see!
1
2
3
4
29
Multiple Choice
Which layer in the image label the inner core?
Hit the back button if you don't remember! Don't forget to enlarge the image if it is too small to see!
1
2
3
4
30
31
32
Multiple Choice
The order of the earth’s 4 main layers from most dense to least dense are
Inner Core, Crust, Mantle and Outer Core
Crust, Mantle, Outer Core and Inner Core
Inner Core, Outer Core, Mantle and Crust
Crust, Outer Core, Inner Core and Mantle.
33
Multiple Choice
34
Multiple Choice
The lithosphere combines what two layers?
Athenosphere & Crust
Crust & Upper Mantle
Mantel & Asthenosphere
35
Multiple Choice
Temperature & pressure _____________ as you go deeper into the earth.
increase
decrease
goes up and down depending on the layer
stays the same
36
Multiple Choice
37
Poll
Pick the topics/concepts you are comfortable with below.
4 Main Layers of Earth in Order (I Owe Ms. C.)
Lithosphere & Asthenosphere - where are they and basic characteristics
What happens to temperature, pressure and density as you go deeper into Earth
Basic characteristics of 4 Main Layers
Show answer
Auto Play
Slide 1 / 37
SLIDE
Similar Resources on Wayground
33 questions
Homeostasis and Cellular Processes
Presentation
•
7th Grade
32 questions
Unit 4 Atmosphere and Weather
Presentation
•
7th Grade
27 questions
Water Resources
Presentation
•
7th Grade
27 questions
Balanced and unbalanced forces
Presentation
•
7th Grade
36 questions
Biotic and Abiotic Factors
Presentation
•
7th Grade
33 questions
Watersheds
Presentation
•
7th Grade
34 questions
Biodiversity Intro
Presentation
•
7th Grade
34 questions
Terrestrial Biomes Review
Presentation
•
7th Grade
Popular Resources on Wayground
10 questions
Safety Day 2026 – Student Review
Quiz
•
9th Grade
21 questions
Continents and Oceans
Quiz
•
6th Grade
20 questions
Parts of Speech
Quiz
•
5th Grade
16 questions
Subject & Predicate
Quiz
•
5th Grade
25 questions
Multiplication Facts
Quiz
•
5th Grade
12 questions
Map Skills
Quiz
•
3rd Grade
22 questions
Continents and Oceans
Quiz
•
5th Grade
15 questions
Rounding Decimals
Quiz
•
5th Grade
Discover more resources for Science
10 questions
Exploring Chemical and Physical Changes
Interactive video
•
6th - 10th Grade
14 questions
Week 1 Falcon Flex Fast and Curious
Quiz
•
7th Grade
42 questions
Explore Plate Tectonics and Boundaries
Quiz
•
7th Grade
21 questions
Waves and Wave Properties
Quiz
•
6th - 8th Grade
16 questions
Photosynthesis and Cellular Respiration Review
Quiz
•
7th Grade
20 questions
Food Webs + Energy Pyramids
Quiz
•
7th Grade
9 questions
Biology: Cell Structure
Interactive video
•
7th Grade
8 questions
Diffusion and Osmosis Review
Presentation
•
6th - 8th Grade