Why do most sidewalks have cracks in them every few feet?

2 answers:

8 0

This is actually a really good question! The lines are actually called "contraction joints." When the sidewalk is being made, the concrete used shrinks as it dries. This shrinking can cause cracks to form in the sidewalk, so to prevent the cracks from forming randomly, the builders make thin lines. Any cracks that form should follow the path of the line, since this is where the concrete is thinnest.

Hope this helps! :)

Elodia [21]3 years ago

7 0

It's because of the landscape, it changes over time.

You might be interested in

Can someone help me understand what 1b is asking and how to answer it?

icang [17]

The question is basically asking what is happening to the energy (that is in the form of heat) when it is being absorbed by an object. The energy being absorbed from the heat source is being turned into kinetic energy. This can be explained by temperature change. As you add more heat to an object, the temperature rises. Since temperature is the average kinetic energy of all of the molecules in an object, we can say that as temperature rises so does the kinetic energy of the molecules in the object. Due to the fact that heat is causing the temperature to increase, we can say that the energy from the heat is being turned into kinetic energy.

I hope this helps. Let me know in the comments if anything is unclear.

5 0

2 years ago

All of the following are part of the electromagnetic spectrum but

Lelechka [254]

Your answer is radio waves

6 0

3 years ago

Jupiter’s moon Io was discovered to have high concentrations of sulfur oxides in its atmosphere. This, in combination with resea

deff fn [24]

Answer:

S₂O₂

Explanation:

The multiplying prefix di- means "two."

Thus, a molecule of disulfur dioxide has two atoms of sulfur and two atoms of oxygen.

The formula is S₂O₂.

4 0

2 years ago

HELP PLZZZZZZZZZZZZZ I WILL GIVE BRAINLIST!!!!!!!!!!!

Phantasy [73]

Answer:

c the pressure increases

5 0

3 years ago

6.02 Ionic and covalent bonds.

Ivan

Convalent Bond energy is low

3 0

3 years ago