S3.12.8 For the adult
Exploring space
Nobody has been to Jupiter. How do we know what it looks like?
What this chapter teaches
Telescopes collect more light than an eye, so they show faint and far things. Satellites orbit the Earth and give weather pictures, phone and television signals and positions. Space probes travel to other planets. Radio waves take time to cross space.
Three questions to ask
There is no one right wording. Listen for the idea.
- How does a telescope help us see faint things?
- What jobs can a satellite do for people?
- Why does a message from a probe take so long to arrive?
After the chapter, the learner can
- Explain how telescopes, satellites and space probes help us learn
- Name ways satellites help people, such as weather and phone signals
What they copy into their notebook
Telescopes collect light to show far things. Satellites orbit the Earth for weather, signals and positions. Space probes travel to other planets and send messages by radio.