Choice of Words: Observe means to watch or look at something carefully. Earth is the planet we live on.
Alternative Expressions
Satellites watch Earth.
Meaning: This means that satellites are looking at Earth and taking pictures or gathering information about it.
Choice of Words: **Satellites** are like space machines that float around Earth. They have special cameras and tools that help them see what's happening on our planet. **Watch** means to look at something carefully, like when you watch a movie or TV show.
Satellites keep an eye on Earth.
Meaning: This means that satellites are watching Earth and making sure everything is okay.
Choice of Words: **Keep an eye on** means to watch or pay attention to something. It's like when your parents tell you to keep an eye on your little brother while they're out. **Earth** is the planet we live on.