Define - Astronomical unit.

One Line Answer

One astronomical unit is defined as the average distance between the earth and the sun.

1 AU = 1.496 5 10⁶km = 1.496 × 10¹¹m.

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Measuring Larger Distances

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Chapter 1: Measurement - Evaluation [Page 11]

Chapter 1 Measurement
Evaluation | Q IX. 5. | Page 11

The materials with higher density are called ______.

If the density of a solid is lower than that of a liquid it ______ is that liquid.

If the density of a solid is higher than that of a liquid, it ______ is that liquid.

The total number of seconds in one year = ______.

The nearest star to our solar system is proxima centauri.

The volume of a figure is the region covered by the boundary of the figure.

1 Light year = 9.46 x 10⁵ m.

What is the fundamental unit of amount of substance?

Assertion (A): Light year and wavelength both measure distance
Reason (R): Both have dimensions of time.

Write the units which are used to measure long distances.