Throughout centuries, mankind used different methods to measure time. List
the methods below historically from oldest to newest.
To measure time
1. People used back and forth motion (ossilation) of pendulums.
2. People used water dripping at a constant rate.
3. People used ossilation of quartz crytals placed in an electric circuit.
4. People used the shadow of a stick as sun travels across the sky.
5. People used atomic clocks using Cesium atoms.

1. when conducting a test on what kind of music increases the growth of plants, all of the following would fail to meet to fair test standard except (1 point) using different kinds of plants. giving some plants more water than others. exposing the plants to different types of music. using nutrient-rich soil for one and lesser soil for others. 2. engineering uses scientific thinking to solve real-world problems. (1 point) true false 3. what does it mean to test a hypothesis? (1 point) pass a quiz on other scientists’ results analyze only the results from scientific sources not make assumptions about how an experiment will turn out see if the results of an experiment are what the scientist predicted