Extension - The Universe

The average distance between the Moon and Earth is 384 * 10³ km.
1. 384,000
2. Study
The average distance between the Venus and Earth is 25.7 * 10⁶ km.
1. 25,700,000
2. 25700000
3. Study
The average distance between the Mars and Earth is 48.7 * 10⁶ km.
1. 48,700,000
2. Study
The average distance between the Mercury and Earth is 56.9 * 10⁶ km.
1. 56,900,000
2. Study
The average distance between the Jupiter and Earth is 390.7 * 10⁶ km.
1. 390,700,000
2. Study
The average distance between the Saturn and Earth is 794.1 * 10⁶ km.
1. 794,100,000
2. Study
The average distance between the Uranus and Earth is 1.6911 * 10⁹ km.
1. 1,691,100,000
2. Study
The average distance between the Neptune and Earth is 2.7011 * 10⁹ km.
1. 2,701,100,000
2. Study
The average distance between the Pluto and Earth is 3.5821 * 10⁹ km.
1. 3,582,100,000
2. Study
Alpha Centari is the star system that is closest to Earth. It is only 41.2 * 10¹². How is that written in short word form?
1. 41.2 billion
2. 41.2 trillion
3. 41.2 quadrillion
4. 41.2 quintillion
Our galaxy is called the Milky Way. The Milky Way is 925 * 10¹⁵ km in diameter. How is that written in short word form?
1. 925 billion km wide
2. 925 trillion km wide
3. 925 quadrillion km wide
4. 925 quintillion km wide
Alpha Centari is the closest solar system to Earth, but Leo1 is the closest galaxy to Earth. To reach Leo1, a spacecraft would need to travel 8.3274 * 10¹⁸ km. That's about __________.
1. 8 trillion km
2. 8 quadrillion km
3. 8 quintillion km
4. 8 sextillion km
The galaxy M31 is 22.36 * 10¹⁸ km from Earth. How do you write 22.36 quintillion in standard form?
1. 22,360,000,000,000,000,000
2. Study
The Ursa Major Group is a group of galaxies that are about 520.3 * 10¹⁸ km from Earth. How do you write 520.3 quintillion km in standard form?
1. 520,300,000,000,000,000,000
2. Study
The Virgo Cluster is a group of galaxies that are about 614.9 * 10¹⁸ km from Earth. How do you write 614.9 quintillion km in standard form?
1. 614,900,000,000,000,000,000
2. Study
A mere 2.838 sextillion km from Earth is a huge cluster of galaxies called the Perseus Cluster. If 2.838 sextillion is written as 2.838 * 10²¹ in scientific notation, how many zeros do you need to add to the 2838 to write it in standard form?
1. 18
2. Study
The farthest visible reaches of space are 113 sextillion km from Earth. If 113 sextillion is written as 113 * 10²¹ in scientific notation, how many zeros do you need to add to the 113 to write it in standard form?
1. 21
2. Study