U3W1 Earth and Its Neighbors

Front

Who was the first astronaut of the United States?

Back

Alan Shepard

Front

What was the first American satellite launched into space?

Back

Explorer 1

Front

What did Galileo discover about the sun?

Back

Spots on the sun.

Front

How did Galileo contribute to our understanding of the moon?

Back

He used a telescope to observe the moon's surface and its features.

Front

What is the best meaning of the word 'explore'?

Back

To look and discover.

Front

What year did the United States launch its first satellite?

Back

1958

Front

What is the significance of Alan Shepard in space exploration?

Back

He was the first American to travel into space.

Front

What were some of Galileo's contributions to astronomy?

Back

He improved the telescope, discovered moons of Jupiter, and studied the phases of Venus.

Front

What is the purpose of a satellite?

Back

To collect data and transmit information back to Earth.

Front

What is the relationship between Earth and its neighbors in space?

Back

Earth is one of the planets in the solar system, which includes other planets, moons, and celestial bodies.