Glass shattering in to pieces bubblegum being stretched a piece of metal expanding due to heat these are all examples of question 13 options: phase change. temperature change. chemical change. physical change.

Its physical change

Explanation:

because if you break the glass you can put it back together, chemical change says you cant be converted back to its original form( for example burn wood once wood burns it turns to ashes)

from 1609, galileo galilei used the recently invented telescope to observe the sun, moon and planets. he saw the mountains and craters of the moon, and for the first time revealed the planets to be worlds in their own right. galileo also provided strong observational evidence that planets orbited the sun.

his discoveries about the moon, jupiter's moons, venus, and sunspots supported the idea that the sun - not the earth - was the center of the universe, as was commonly believed at the time.galileo turned his gaze toward venus, the brightest celestial object in the sky - other than the sun and the moon.