Confusing nouns

On every ____________ (voyage / trip) there are expert marine biologists.

When the plane starts going, everything floats off the _____________. (ground / floor)

We will teach you everything you need to know to jump and land safely on the (surface / ground)

You will learn a lot while having lots of fun during your __________ ( journey / voyage) in our 116-foot safari boat Nautilus.

You are always near the __________ (ground / surface) so diving with us is easy as snorkeling.

You can decide when you want to take your ___________ (trip / flight) with us from the Logan Airport.

You'll be travelling by plane. The idea is to film you during the___________ (voyage / journey).