science

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. 👍
  2. 👎
  3. 👁
  1. 1. less density?
    2. shrink
    3. expand
    4. the road will crack

    i think.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    (1) which of the following correctly identifies the methods of heat transfer? 1. A- convention B- radiaton C- conduction ~~~~~~~~~~~~~ 2. A- conduction B- radiaton C- convention ~~~~~~~~~~~~~ 3. A- convention B- conduction C-

  2. Chemistry

    When a chemical cold pack is activated, a chemical reaction occurs that causes the pack to feel cold. - Describe the transfer of energy betwen a cold pack and the air around it.

  3. history

    How did the Pacific Theater have lasting effects on nations following World War II? a. The backlash of America’s attempt to rebuild Japan led to the expansion of Soviet influence in the Pacific. b. The British reclaiming control

  4. The Watson go to Birmingham 1963?

    1. Which of the following passages from the novel best describes the setting? A. It was one of those super duper cold Saturday. B. One of those days that when you breathed kind of hung frozen in the air like a hunk of smoke and

  1. Physics

    Hot air balloons float in the air because of the difference in density between cold and hot air. In this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. To do this,

  2. Physics

    A sound wave is traveling in warm air when it hits a layer of cold, dense air. If the sound wave hits the cold air interface at an angle of 23 degree angle, what is the angle of refraction? Assume that the cold air temperature is

  3. Social studies

    Drag and drop the definitions and the countries to the correct economic system. China during the Cold War Japan during the Cold War Mongolia during the Cold War North Korea during the Cold War South Korea during the Cold War

  4. SCIENCE PLZ I NEED HELP NOW

    The joints highlighted in the image below are _______ joints. Fill in the blank

  1. social studies

    Which of the following is a reason why historians may want to consider opinions as well as facts reported by a source? ------=my answer 1. A. A source that historians trust is likely to have true opinions. B. The opinions may

  2. Earth Science

    A.________-large body of air that develops over a particular region; it acquires the characteristics of the area over which it occurs B.__________-boundary between different air masses 1.___-cold air mass pushes under a warm air

  3. Language Help me

    1. Which of the following passages from the novel best describes the setting? A. It was one of those super duper cold Saturday. B. One of those days that when you breathed kind of hung frozen in the air like a hunk of smoke and

  4. math

    Why do Eskimos wash their clothes in tide? 10 letters (doesn't have to be one word) The answers:Cold out tide,Too Cold Out, Its cold Out, and No tap water don't work.

You can view more similar questions or ask a new question.