earth science
Which ancient device for measuring time is similar to decorative garden sundails used today
a.the shadow stick of the ancient egyptians
b.the water clock of the ancient Greeks
c.the weight -driven mechanical clocks of the 14th century
d.the pendulum clocks of the 17th Century
http://www.fi.edu/time/Journey/Sundials/aboutsd.htm
The correct answer is a. The shadow stick of the ancient Egyptians. To arrive at this answer, we need to understand what each of the options refers to.
a. The shadow stick of the ancient Egyptians: This refers to the use of a vertical stick or obelisk to measure the passing of time based on the shadow it casts as the sun moves across the sky.
b. The water clock of the ancient Greeks: This refers to the use of a vessel that measured time based on the regulated flow or drip of water. The level of water would indicate the passage of time.
c. The weight-driven mechanical clocks of the 14th century: This refers to the introduction of mechanical clocks that used weights and gears to keep time. These were typically found in towers or public places and required winding.
d. The pendulum clocks of the 17th century: This refers to clocks that used the swing of a pendulum to regulate time. The period of the pendulum's swing was used to measure time accurately.
Out of all these options, the one that is similar to decorative garden sundials used today is the shadow stick of the ancient Egyptians. Both the sundials and the shadow stick rely on the concept of measuring time based on the movement of the sun and the resulting shadows.