The History of Pluto's Classification in Our Solar System

The History of Pluto's Classification in Our Solar System

Assessment

Passage

Science

3rd Grade

Hard

NGSS
MS-PS2-4

Standards-aligned

Created by

Carrie Swails

FREE Resource

5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the reclassification criteria for planets?

Orbiting the moon, having sufficient mass, and clearing its orbit.

Orbiting the sun, having sufficient mass, and clearing its orbit.

Orbiting the earth, having sufficient mass, and clearing its orbit.

Orbiting the sun, having insufficient mass, and not clearing its orbit.

Tags

NGSS.MS-PS2-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why was Pluto reclassified as a dwarf planet in 2006?

Due to its large size and unique orbit

Because it is made mostly of ice and rock

As a result of its small size and failure to clear its orbit

For being the farthest planet from the Sun

3.

OPEN ENDED QUESTION

3 mins • 1 pt

How did Pluto's reclassification impact the ongoing debates about the definition of a planet and celestial body classification?

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4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who discovered Pluto in 1930?

Galileo Galilei

Isaac Newton

Clyde Tombaugh

Albert Einstein

5.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Pluto's unique orbit and characteristics led to its controversial classification in our solar system. What is Pluto's classification?