Question

drag each tile to the correct box.
arrange the following events in space exploration in chronological order.
humans orbited earth.
sputnik i was launched into space.
the first human stepped onto the moon.
explorer i was launched.

Explanation:

• Sputnik I (1957) was the first artificial satellite in space.
• Explorer I (1958) was the US’s first satellite, launched after Sputnik.
• Humans orbited Earth (1961, Yuri Gagarin) came next.
• The first human (Neil Armstrong) stepped onto the moon in 1969, the last event.

Answer:

1. Sputnik I was launched into space.
2. Explorer I was launched.
3. Humans orbited Earth.
4. The first human stepped onto the moon.