1. What idea is NOT mentioned in theactivity? A) people will travel to otherplanets B) the size of our Solar System C) information aboutplanets D) only Earth has gotlife 2. In what way are the planets described? A) mixture ofrings B) mixture ofgases C) as mixture ofcolours D) mixture ofelements 3. What scientists did withPluto? A) decided it is aplanet B) named it in anotherway C) took probes fromit D) decided it is not aplanet