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How to enter a blank line in a terminal without executing the command

How can I enter a new blank line in `gnome-terminal` / `bash` without executing the command?

I'm currently using Linux Mint 22.2. I've dabbled with Linux on many previous occasions, but am now trying to use it as my primary OS. I've been a heavy user of the command line in Windows. On Windows powershell (*not* using the newer Windows Terminal), I've gotten used to experimenting with scripts on the command line, and found it useful to be able to add new lines using `<shift><enter>`.

However, I cannot figure how to do the equivalent in `gnome-terminal` / `bash`.

I've installed `dconf-editor` and searched through settings it exposes, but haven't found anything that would affect the behavior of enter.

I've also tried using `\` to escape the newline, but that also immediately executes, e.g. `echo 'cat' \` just immediately prints
```
cat
\
```

I'm not sure whether the behavior of `<enter>` is a function of the emulator (gnome-terminal) or the shell (bash) or some combination of both.