My grandparents decided to __________ to the United States for better opportunities.
emigrate
People often __________ to other countries to escape war.
emigrate
She had to learn a new language when she __________d to a foreign country.
emigrated
Getting a good night's sleep is __________ for your health.
significant
We should celebrate all __________ milestones, big or small.
significant
The discovery of penicillin had a __________ impact on medicine.
significant
Astronauts use the __________ to launch into space.
space shuttle
The __________ is like taxi that can travel back and forth from Earth to space.
space shuttle
The __________ can carry both crew members and science equipment for space missions.
space shuttle
A __________ is a man-made object that orbits around a planet or a star.
satellite
Weather __________ help us predict and watch storms.
satellites
If there were no _________, you couldn't use your cell phone.
satellites
During a nature walk, we can __________ different types of birds and animals.
observe
Scientists use telescopes to __________ far away stars.
observe
When you __________ carefully, you can learn a lot about the world around you.
observe
I was nervous to take my first __________ on an airplane.
flight
