18 answers, 2:30 on the clock. One clue at a time; type the inventor. Correct answers lock in the moment they match, no Enter needed. Solve as many as you can; time is the tiebreak.
One clue at a time. Type your answer for each, no multiple choice and no word bank. Name all 18.
About this quiz
One clue at a time. Type your answer for each, no multiple choice and no word bank. Name all 18.
Each clue appears in turn and you type the answer.
Filed under Science & Nature with 18 answers to get and 2:30 on the clock. Free to play, no sign up needed, and your score goes on the leaderboard.
Source: Reference: history of invention
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