What is the opposite of “artificial”?
Natural
Which phrasal verb means “stop working”?
Breakdown
What do you make when you try to do something difficult?
Attempt
What does “manage” mean: succeed or fail?
Succeed
What is a scientist who studies science?
Scientist
What does “accurate” mean?
Correct or true
Which phrasal verb means “discover”?
Find out
What do you use to find the reason for a problem?
Cause
What does “consider” mean: think or forget?
Think
What is the noun form of “invent”?
Invention
What is the difference between an “engine” and a “machine”?
An engine produces power; a machine is a device that does a particular job.
Which phrasal verb means “think of”?
Come up
What do scientists do to test an idea?
Experiment
What does “wonder” mean: question or answer?
Question
What is the noun form of “observe”?
Observation
What means existing in nature?
Natural
Which phrasal verb means “reduce possibilities”?
Narrowdown
What do you reach after thinking carefully about the results?
Conclusion
What does “result” mean: outcome or beginning?
Outcome
What is the negative form of “possible”?
Impossible
What means a particular way of doing something?
Method
Which phrasal verb means “connect to electricity”?
Plugin
What do scientists do to learn new information?
Research
What does “intend” mean: plan or cancel?
Plan
What is the noun form of “introduce”?
Introduction