Near Earth Objects: A Quiz To Test Your Knowledge!
Near-Earth objects (NEO) are any small solar system body whose orbit brings it to close to Earth. Most known PHOs and NEOs are asteroids, but a small fraction is comets. The United States, the European Union, and other nations are searching for NEOs through a program which is referred to as Spaceguard. NEOs have low surface gravity, and many have Earth-like orbits making them easy targets for spacecraft. This quiz is to test your knowledge on these Near Earth Objects.
- 1.
Which of the following qualifies a solar system body as a NEO?- A.
If its closest approach to the sun is less than 1.3 astronomical units
- B.
If its closest approach to the sun is less than 1.7 astronomical units
- C.
If its closest approach to the sun is less than 1.5 astronomical units
- D.
If its closest approach to the sun is less than 1.4 astronomical units
- 2.
When is a NEO considered a potentially hazardous object?
- A.
If its orbit crosses the Earths and it's larger than 140 meters
- B.
If its orbit crosses the Earths and it's larger than 120 meters
- C.
If its orbit crosses the Earths and it's larger than 100 meters
- D.
If its orbit crosses the Earths and it's larger than 130 meters
- 3.
There are how many known NEOs?
- A.
19,220
- B.
19,000
- C.
19,229
- D.
18,589
- 4.As of November 25, 2018, comets make up how many percent of the NEOs?
- A.
7.3%
- B.
46.9%
- C.
0.6%
- D.
0.56%
- 5.
Atens make up how many per cent?
- A.
7.3%
- B.
42.2%
- C.
0.75%
- D.
7.39%
- 6.
Apollos are of how many per cent?
- A.
0.89%
- B.
5.5%
- C.
49.7%
- D.
27.9%
- 7.
Amors make up how many percent?
- A.
42.2%
- B.
41.97%
- C.
19.92%
- D.
0.63%
- 8.
Which of the following is a result of asteroids hitting water bodies?
- A.
Tsunamis
- B.
Flood
- C.
Landslide
- D.
Vulcanoes
- 9.
As of January 6, 2019, how many PHAs exist?
- A.
1,955
- B.
1,893
- C.
2,597
- D.
1,981
- 10.
As of March 15, 2017, how many NEAs were known to have at least one moon?
- A.
59
- B.
37
- C.
66
- D.
72
Questions: 10 | Attempts: 2141 | Last updated: Mar 22, 2022
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