1.when air is cold, it has less ______.
2.the expansion joints _______ when it is cold outside.
3.the expansion joints ______ when it is hot outside.
4.what might happen to a road without expansion joints?
The _____ is a blank need answer please and 4 need it to be short please. and thankyou for your help.
1. less density?
2. shrink
3. expand
4. the road will crack
i think.
1. When air is cold, it has less moisture.
2. The expansion joints contract when it is cold outside.
3. The expansion joints expand when it is hot outside.
4. Without expansion joints, a road might crack or buckle due to temperature-induced stress.
1. When air is cold, it has less moisture or water vapor.
To determine the answer, you can refer to the physical properties of air. As temperature decreases, the capacity of air to hold water vapor decreases, resulting in lower humidity levels.
2. The expansion joints contract when it is cold outside.
To answer this, you need to understand the behavior of materials with temperature changes. In colder temperatures, materials tend to contract or shrink, including the components of expansion joints.
3. The expansion joints expand when it is hot outside.
Again, the answer requires knowledge of material behavior. When exposed to higher temperatures, materials expand or enlarge in size, including the components of expansion joints.
4. Without expansion joints, a road might crack or develop structural problems.
To understand this, you can consider the effects of temperature fluctuations on rigid structures like roads. Without the flexibility provided by expansion joints, the road pavement may experience thermal stress and eventually develop cracks or other forms of damage.