# PTE Reading FIB #15: Branches of Astronomical...

Reading: Fill in the Blanks #15 - Level 2 - Feeds Reading

> In the text below some words are missing. Drag word from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.

There are two basic branches of the science of astronomy: observational and theoretical. Observational astronomy, as the name suggests, is concerned with observing the ____ and then analyzing the observations, using the ____ of physics. Theoretical astronomy focuses more on developing computer or analytical models to ____ astronomical phenomena. The two ____ complement each other, with observational astronomers attempting to ____ theoretical results, and theoreticians aiming to explain what has been observed.

## Answer

There are two basic branches of the science of astronomy: observational and theoretical. Observational astronomy, as the name suggests, is concerned with observing the **skies** and then analyzing the observations, using the **principles** of physics. Theoretical astronomy focuses more on developing computer or analytical models to **describe** astronomical phenomena. The two **fields** complement each other, with observational astronomers attempting to **confirm** theoretical results, and theoreticians aiming to explain what has been observed.

## Explanation

In blank 2, you use "the principles of physics" to analyze what you see. "Effects" and "angles" do not name rules for analysis. Blank 4 needs a plural noun for the two branches, so "the two fields" fits. In blank 5, observers "confirm" theory, while theorists explain what was observed.

## Hints

- Look for nouns that follow prepositions or verbs that describe the actions of researchers.
- Consider the relationship between the two research branches mentioned in the text.

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