If you were absent, please watch this video so you can answer the questions
1 point
1
Question 1
1.
At room-temperature the metal ball fit through the ring.
What happened when your teacher tried to push the heated ball through the ring?
1 point
1
Question 2
2.
What happened to the particles in the heated metal ball so that it didn’t fit through the ring?
1 point
1
Question 3
3.
After the ball was cooled by putting it in the water, why do you think it fit through the ring again?
4 points
4
Question 4
4.
Look at the picture of the road of a bridge and use the animation above.
The road on a bridge gets colder in the winter and hotter in the summer than the road leading to it and away from it. Many bridges have a flexible connection like the one shown in the picture.
Knowing what you do about how solids act when they are heated and cooled, why do you think they put flexible connections in the road on a bridge?