

25-26 Heat Flow Inside the Earth
Presentation
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Science
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6th - 8th Grade
•
Practice Problem
•
Medium
+8
Standards-aligned
Rachel Thomas
Used 3+ times
FREE Resource
26 Slides • 26 Questions
1
2
Open Ended
Why is understanding the flow of heat inside the Earth important for scientists and society?
3
4
Multiple Choice
Which statement best describes how heat transfer works?
Heat always moves from a warmer place to a cooler place.
Heat always moves from a cooler place to a warmer place.
Heat moves randomly between objects regardless of temperature.
Heat only moves when objects are touching.
5
6
7
8
Multiple Choice
Which method of heat transfer is responsible for the handle of a metal pan becoming hot when placed on a stove?
Conduction
Convection
Thermal Radiation
Evaporation
9
10
Open Ended
Explain how the process of convection occurs in boiling water, and describe what causes the movement of water within the saucepan.
11
12
Multiple Select
Which of the following statements about convection are correct?
Convection occurs in liquids and gases.
Convection is caused by differences in density due to temperature changes.
Convection can occur in solids.
Convection involves the movement of heated material.
13
14
Open Ended
Compare and contrast conduction, convection, and thermal radiation in terms of how heat is transferred and the types of materials involved.
15
Fill in the Blanks
Thermal radiation is the transfer of energy by electromagnetic
16
17
Multiple Choice
Where is heat inside Earth generated?
Mantle
Crust
Inner Core
Outer Core
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20
Open Ended
Explain how gravity contributes to the generation of heat in the Earth's inner core.
21
22
Fill in the Blanks
Radioactive elements are unstable, breaking down over time to more stable forms. When radioactive elements decay, nuclear energy is transformed into
23
Multiple Select
Which of the following are sources of heat in the Earth's inner core?
Collisions
Gravity
Radioactive Decay
Sun
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25
Multiple Choice
Based on the temperature-depth graph, at approximately what depth does the temperature inside the Earth reach 6000°C?
1000 km
3000 km
6000 km
200 km
26
Open Ended
Describe the two main mechanisms by which heat is transferred from the Earth's core to the crust, as shown in the diagram.
27
28
Multiple Choice
Which heat transfer mechanism is primarily responsible for transferring heat from the inner core to the outer core?
Conduction
Convection
Radiation
Evaporation
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31
32
Open Ended
Explain how the flow of iron in the outer core contributes to Earth's magnetic field.
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35
Multiple Choice
What would happen to a compass if Earth's magnetic field reversed polarity?
The compass needle would point south instead of north.
The compass would stop working entirely.
The compass needle would spin continuously.
The compass would always point east.
36
Multiple Select
Which of the following statements about convection currents in Earth's mantle are correct?
Magma rises due to low density.
Magma sinks due to high density.
Magma is heated by the core.
Magma becomes more dense as it spreads out.
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38
Open Ended
Describe how heat from the core affects the movement of magma in the mantle and the formation of convection cells.
39
Fill in the Blanks
As magma continues to sink and float in Earth’s Mantle it creates a
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41
Multiple Choice
What happens to magma as it spends more time near the lithosphere?
It cools down and becomes more dense
It heats up and becomes less dense
It evaporates
It turns into rock immediately
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43
Open Ended
Explain how convection currents in the mantle contribute to the movement of tectonic plates.
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45
Multiple Select
Which of the following statements about tectonic plates are correct?
They fit together like a jigsaw puzzle
They float on the asthenosphere
They are only made of continental crust
They move due to convection currents
46
Fill in the Blanks
The rigid crust and top part of the mantle float on the hot, plastic material of the
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50
Open Ended
Describe the difference between convergent and divergent plate boundaries using the diagrams provided.
51
Fill in the Blanks
Heat always moves from a
52
Open Ended
Summarize what you learned about how heat moves inside the Earth and how this relates to heat transfer in general.
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