Question

Complete these sentences using these words. horizon galaxies astronomer sunrise appears sunset universe telescopes You might have to use one more than once. An studies the stars in________ in the_______ They use optical _______to see stars far away. The Sun _________to rise above the______at______ and move across the sky to sink below the _________at______ ​

Answer 1

An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen. So much energy is released that the hydrogen gas released spontaneously burns in the air.

Explanation:

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Answer 2

Explanation:

An astronomer studies the stars in galaxies in the universe They use optical telescope to see stars far away. The Sun appears to rise above the horizon at sunrise and move across the sky to sink below the horizon at sunset l