Answer:
It made significantly better predictions of planetary positions in our sky
Explanation:
Of the following statements the one which was not a major advantage of Copernicus's Sun-centered model over the Ptolemaic model is that it made significantly better predictions of planetary positions in our sky. Both the model made similar predictions of planetary position in our sky. In fact the Ptolemaic model was even better than the Copernicus's heliocentric model when it came to positioning of planets.
Answer:
D) the steady, clocklike decay of certain radioactive isotopes over time.
Explanation:
Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks.
For example, when rocks are formed, such as igneous rocks (formed when molten rocks cools), certain radioactive atoms are trapped inside the rocks during this formation process. Then these radioactive atoms decay over time.
The age of the rock can be estimated by comparing the occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.
From the options;
A) this is about the formation of the radioactive molecules and not about radiometric dating
B) this is radiocarbon dating (cabon dating/carbon-14 dating)
C) the <em>assumption </em>is wrong since the radioactive isotopes decays not accumulate.
D) the corect option as I explained earlier.
Answer:
The landform that will form is a mid-ocean ridge.
Explanation:
When tectonic plates move away from each other they form a divergent plate boundary. At this type of boundary, as the plates move away, a gap starts to open up gradually. This gap becomes wider and wider over time and the crust is made much less thick, which in turn presents a good opportunity for the magma to come out on the surface.
Because the crust is weaker and thinner, the magma manages to rise through it and rich the surface relatively easily. As it does, the magma reaching the surface, or rather the bottom of the ocean, it solidifies in the water and as more and more magma comes out it piles up. By piling up and constantly creating new rock an underwater mountain chain starts to form and this type of mountain chain is known as a mid-ocean ridge.
Question Continuation
1. Mercury goes through a full cycle of phases
2. Moon rises in east, sets in west each day
3. Stars circle daily around north or south celestial pole
Answer:
The true statements are are (2) and (3)
2. Moon rises in east, sets in west each day.
From all part of the earth, we can see and observe the moon only that the stars move in parallel to the horizon in the north pole.
3. Stars circle daily around north or south celestial pole.
The relative position of starts are always altered because of the earth's rotation
While (1) does not really occur as seen from Earth
1. Mercury goes through a full cycle of phases
We can see the mercury from the Earth but in its whole form not in its phases.
