Chemistry, 24.02.2021 05:40 genyjoannerubiera
Early astronomers noticed that some stars in the sky appeared to move together across the sky as constellations. How do astronomers today explain this motion?
The sun's gravity keeps the stars together because they orbit the sun at the same rate.
The sun's gravity keeps the stars together because they orbit the sun at the same rate.
The stars appear to move together along a path because of Earth's rotation on its axis.
The stars appear to move together along a path because of Earth's rotation on its axis.
Gravitational attraction between the stars keeps them fixed relative to each other as they move.
Gravitational attraction between the stars keeps them fixed relative to each other as they move.
The stars move around Earth in the same way, so their positions relative to each other stay the same.
Answers: 2
Chemistry, 22.06.2019 03:30
If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.
Answers: 1
Chemistry, 22.06.2019 06:40
Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?
Answers: 3
Early astronomers noticed that some stars in the sky appeared to move together across the sky as con...
Mathematics, 26.02.2021 17:50
Social Studies, 26.02.2021 17:50
Chemistry, 26.02.2021 17:50
Mathematics, 26.02.2021 17:50
Mathematics, 26.02.2021 17:50
Mathematics, 26.02.2021 17:50
English, 26.02.2021 18:00
History, 26.02.2021 18:00
Mathematics, 26.02.2021 18:00
Mathematics, 26.02.2021 18:00
Chemistry, 26.02.2021 18:00
History, 26.02.2021 18:00
Mathematics, 26.02.2021 18:00
Mathematics, 26.02.2021 18:00