Question

plate tectonics is the movement of lithospheric plates. these plates float on the mantle and move because of

Explanation:

To solve this fill - in - the - blank question about plate tectonics, we can use our knowledge of geology (a subfield of Natural Science, specifically Earth Science which falls under Geography or Geology in the given subfields).

Step 1: Recall the structure of the Earth's layers related to plate tectonics

The lithospheric plates float on the asthenosphere (a part of the upper mantle that is semi - fluid). And the movement of these plates is due to convection currents in the mantle (the asthenosphere is part of the mantle's upper layer).

Step 2: Analyze the given blanks

The first blank (after "float on the") should be filled with "asthenosphere" (or "upper mantle" as a more general term, but asthenosphere is more precise). The second blank (after "because of") should be filled with "convection currents" (or "heat and convection in the mantle").

If we assume the first blank is about the layer they float on, the answer for the first blank (the one with the arrow pointing up) is "asthenosphere" (or "upper mantle"), and for the second blank (the one with "mantle" above it, maybe a misspelling or partial word, if we consider the movement cause) is "convection currents" (or "heat in the mantle").

For the blank with "mantle" (maybe a typo, like "mantle" was supposed to be part of the question, and the blank is for the movement cause), the movement of lithospheric plates is because of convection currents in the mantle (or more precisely, convection currents in the asthenosphere which is part of the upper mantle). And they float on the asthenosphere (upper mantle).

If we take the first blank (the lower one, "float on the _"): The lithospheric plates float on the asthenosphere (a layer of the upper mantle that is plastic - like). So we can fill "asthenosphere" (or "upper mantle").

The second blank (the upper one, "move because of _"): The plates move because of convection currents in the mantle (the heat from the Earth's core causes convection currents in the semi - fluid asthenosphere, which makes the plates move). So we can fill "convection currents" (or "heat - driven convection in the mantle").

Final Answers

• For the blank "float on the _": \(\boldsymbol{\text{asthenosphere (or upper mantle)}}\)
• For the blank "move because of _": \(\boldsymbol{\text{convection currents (or heat - driven convection in the mantle)}}\)

Answer:

To solve this fill - in - the - blank question about plate tectonics, we can use our knowledge of geology (a subfield of Natural Science, specifically Earth Science which falls under Geography or Geology in the given subfields).

Step 1: Recall the structure of the Earth's layers related to plate tectonics

The lithospheric plates float on the asthenosphere (a part of the upper mantle that is semi - fluid). And the movement of these plates is due to convection currents in the mantle (the asthenosphere is part of the mantle's upper layer).

Step 2: Analyze the given blanks

The first blank (after "float on the") should be filled with "asthenosphere" (or "upper mantle" as a more general term, but asthenosphere is more precise). The second blank (after "because of") should be filled with "convection currents" (or "heat and convection in the mantle").

If we assume the first blank is about the layer they float on, the answer for the first blank (the one with the arrow pointing up) is "asthenosphere" (or "upper mantle"), and for the second blank (the one with "mantle" above it, maybe a misspelling or partial word, if we consider the movement cause) is "convection currents" (or "heat in the mantle").

For the blank with "mantle" (maybe a typo, like "mantle" was supposed to be part of the question, and the blank is for the movement cause), the movement of lithospheric plates is because of convection currents in the mantle (or more precisely, convection currents in the asthenosphere which is part of the upper mantle). And they float on the asthenosphere (upper mantle).

If we take the first blank (the lower one, "float on the _"): The lithospheric plates float on the asthenosphere (a layer of the upper mantle that is plastic - like). So we can fill "asthenosphere" (or "upper mantle").

The second blank (the upper one, "move because of _"): The plates move because of convection currents in the mantle (the heat from the Earth's core causes convection currents in the semi - fluid asthenosphere, which makes the plates move). So we can fill "convection currents" (or "heat - driven convection in the mantle").

Final Answers

• For the blank "float on the _": \(\boldsymbol{\text{asthenosphere (or upper mantle)}}\)
• For the blank "move because of _": \(\boldsymbol{\text{convection currents (or heat - driven convection in the mantle)}}\)