
Exploring the Mysteries of the Ninth Planet

Interactive Video
•
Science
•
9th - 10th Grade
•
Hard
Jennifer Brown
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What distinguishes the newly proposed ninth planet from Pluto?
It has been observed directly by astronomers.
It is smaller than Pluto.
It is similar in mass to Mars or Earth.
It is located closer to the Sun than Pluto.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do researchers believe there might have been a Mars-sized planet in the early solar system?
Because Mars is the only rocky planet in the solar system.
Because there are no gas giants in the outer solar system.
Because the Kuiper Belt is empty.
Because there is a gap between the size of dwarf planets and gas giants.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one method astronomers might use to detect the proposed ninth planet?
By catching it reflecting sunlight.
By observing its own light emission.
By detecting its gravitational influence on nearby stars.
By measuring its temperature directly.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What challenge do astronomers face in finding the ninth planet?
It is hidden behind another planet.
It does not emit its own light.
It is moving too fast to track.
It is too close to the Sun to observe.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a possible fate of the Mars-sized planets in the simulations?
They were launched out of the solar system.
They became moons of Jupiter.
They were absorbed by the Sun.
They collided with Earth.
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