Question
Astronomy Test Unit 1 T1, 2.0 1. Match the following with its definition. a) Nutation __ is the time that take to Earth revolve around the Sun b) Barycenter __ means that the Universe is probably expanding. c) Big Bang Theory __ the spinning of the Earth on its axis. d) Precession __ causes the Earth to nod, or bob throughout its rotational period. e) Rotation __ is a gravity-induced , slow, and continuous change in the orientation of Earth's rotational axis. f) Revolution __ is the balance point between two orbiting bodies.
Answer
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Marshall
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Answer
1. a) Nutation __ d) causes the Earth to nod, or bob throughout its rotational period.2. b) Barycenter __ f) is the balance point between two orbiting bodies.3. c) Big Bang Theory __ b) means that the Universe is probably expanding.4. d) Precession __ e) is a gravity-induced, slow and continuous change in the orientation of Earth's rotational axis.5. e) Rotation __ c) the spinning of the Earth on its axis.6. f) Revolution __ a) is the time that takes to Earth revolve around the Sun.
Explanation
To match the terms with their definitions, we need to understand the concepts:- **Nutation**: A small, periodic oscillation of the Earth's axis that causes the Earth to nod or bob during its rotational period.- **Barycenter**: The center of mass where two or more bodies orbit each other, essentially the balance point between them.- **Big Bang Theory**: The prevailing cosmological model that explains the early development of the Universe, suggesting it is expanding.- **Precession**: A slow, gravity-induced change in the orientation of the Earth's rotational axis.- **Rotation**: The spinning of the Earth on its axis.- **Revolution**: The movement of the Earth around the Sun, taking approximately one year.