Interactivity: Topic 5, Lesson 1: Hot on the Inside Learning intention: This digital activity allows students to identify different layers of Earth.
Slide 1: A Hot Shower

A geyser shoots water and steam out of the ground. The hottest geysers heat steam to temperatures of 200°C or higher.

Volcanoes, geysers, and hot springs all provide clues about Earth's interior. They also show one of the ways that Earth's layers interact with each other.
1. What do you predict Earth's interior is like? How do its rocks compare to rocks on the surface? Cite evidence that supports your prediction.


Slide 2: Layers of the Earth

Here is a diagram of the four main layers of Earth's interior. Write the letter next to the part of the diagram you think is the correct match.
Inner Core: Solid Iron and nickel ball
Mantle: Solid rock that flows slowly
Outer Core: Liquid mixture of iron and nickel
Crust: Thinnest and coolest layer
Slide 3: Textbook
Use your textbook to answer the following questions:
3a. What is the outer-most layer of the Earth called, and what is made up of? (pg 206)

3b. What are some differences between the two types of crust?(pg 206)

3c. How are scientists able to know that the outer core is liquid? Explain your answer using evidence from the text book page 204, use the diagram and captions.

Slide 4

Use what you learned from the textbook (pg 210-211) about Earth's structure to answer the next two questions.

4. What is one effect of convection currents in the mantle?
a. transferring heat from Earth's interior to the crust
b. providing energy to drive the water cycle
c. forming deep-water currents in oceans
d. cooling the rocks of the crust
Slide 5

Convection is the transfer of heat through the rising and sinking of a fluid. A student is constructing an explanation for how convection currents form in the mantle. Which statement would be most useful for the student to include in the explanation?
a. The mantle is the thickest of Earth's four main layers.

b. Temperatures are about the same throughout the mantle.

c. Earth's temperatures increase with depth.

d. The mantle contains gases mixed with rock.

Slide 6

Earth's structure has been compared to the structures of a variety of familiar objects, including fruits such as melons, apples, and peaches. Choose a fruit or other object that could model Earth's structure. Describe ways that the object represents Earth accurately, as well as its limitations as a model.


Assessment:
1. A student is watching a video in order to understand how convection in the mantle of the Earth occurs. The video shows rock rising and sinking to make convection currents in the mantle. Which process is responsible for causing rock to rise?
a. Rock is heated.
b. Rock rapidly cools off.
c. Rock increases in density.
d. Rock undergoes intense pressure.

2. The core consists of two different parts. Which characteristic best describes the major difference?
a. Metal, rock
b. Iron, nickel
c. Older, younger
d. High pressure, low pressure

PLEASE HELP