200
The results of the __________ did not support his hypothesis.
Astronomy is the _______ of the stars.
The _________ was busy in the laboratory.
We set up an _____________ to find out how quickly ice melts in the laboratory.
All laboratory _________ must be returned at the end of the lesson.
It is important to _______ carefully and accurately.
The ___________ was only a few millimetres out.
The ___________ in the desert was over 40 degrees.
The ___________ gave an accurate measure of the temperature of the room.