Winter Quiz
Questions: 16 · 10 minutes
1. In the Northern Hemisphere, what is generally true on the winter solstice?
Day and night are approximately equal in length.
The Sun rises at its highest point in the sky.
It is always the coldest day of the year.
It has the shortest period of daylight and longest night of the year.
2. A road crew spreads salt before an expected freeze. What property makes the salt useful?
It lowers the freezing point of water, making ice formation less likely at some temperatures.
It raises the temperature of the surrounding air.
It converts ice directly into water vapor.
It physically absorbs every drop of water from the road.
3. A small mammal survives winter by entering a prolonged state with greatly reduced activity, metabolism, and body temperature. What is this adaptation called?
Migration
Estivation
Hibernation
Acclimatization
4. Which winter activity typically involves traveling over snowy terrain using narrow skis and poles rather than relying mainly on a lift for downhill runs?
Cross-country skiing
Snowboarding
Ice climbing
Alpine skiing
5. How do the needle-like leaves of many evergreen conifers help them cope with winter conditions?
They draw heat directly from snow resting on the branches.
They expand their surface area to collect winter sunlight.
Their small area and waxy coating help limit water loss when liquid water may be scarce.
They prevent the tree’s sap from containing any water.
6. What is the main reason the Northern and Southern Hemispheres experience winter at different times of year?
Earth moves much farther from the Sun during each hemisphere’s winter.
Earth’s tilted axis causes each hemisphere to receive less direct sunlight during different parts of its orbit.
The Sun releases less energy toward one hemisphere for several months.
Earth rotates more slowly whenever a hemisphere enters winter.
7. A weather forecast predicts liquid raindrops that will freeze when they touch roads, trees, and power lines. What precipitation is being described?
Sleet
Graupel
Hail
Freezing rain
8. Fresh snow can help keep a landscape cool on a sunny winter day. Which property contributes most directly to this effect?
Fresh snow releases stored coldness into the atmosphere.
Fresh snow has a high albedo, so it reflects much of the incoming sunlight.
Fresh snow absorbs nearly all incoming sunlight as heat.
Fresh snow blocks Earth’s gravity from warming the ground.
9. Why can several loose layers of clothing feel warmer than one equally heavy, tightly compressed layer?
Loose layers generate additional body heat through friction.
Air trapped between layers slows the transfer of body heat.
Each layer absorbs cold energy before it reaches the skin.
Multiple fabrics prevent the body from producing perspiration.
10. After a clear, calm winter night, frost appears on grass even though no precipitation fell. Which process best explains it?
Snow in the upper atmosphere evaporated before reaching the ground.
Groundwater rose through the grass and froze on contact with air.
The ground lost heat, cooling nearby surfaces enough for water vapor to deposit or freeze there.
Wind carried microscopic pieces of ice from distant clouds.
11. Two identical snow sculptures are built at the same time, one in direct sunlight and one in deep shade. Under otherwise similar conditions, which is more likely to last longer?
The sculpture in sunlight, because bright light strengthens ice crystals.
Both will always melt at exactly the same rate.
The sculpture in shade, because it generally absorbs less solar energy.
The sculpture in sunlight, because reflected light removes heat from snow.
12. On a cold morning, an untreated bridge may become icy before the nearby road. What best explains this?
Bridges receive less winter precipitation than roads do.
Bridge surfaces naturally contain more water than road surfaces.
Moving vehicles compress the air above bridges until it freezes.
Cold air circulates above and below the bridge, allowing it to lose heat faster.
13. Cold air crosses a relatively warmer, unfrozen lake and then produces heavy snow on the downwind shore. What is this process called?
Lake-effect snow
Orographic snow
Freezing drizzle
Radiation frost
14. Why do ordinary snow crystals commonly show sixfold symmetry?
They are shaped by six prevailing winds inside clouds.
Water molecules arrange themselves into a hexagonal crystal structure as they freeze.
They repeatedly melt and refreeze in groups of six droplets.
Gravity pulls their branches outward in six equal directions.
15. Why does your breath often appear as a pale cloud outdoors in cold weather?
Water vapor in exhaled air condenses into tiny droplets, and sometimes ice crystals.
Cold air makes carbon dioxide turn into visible smoke.
Oxygen freezes briefly as it leaves the lungs.
Warm breath reflects sunlight without undergoing a physical change.
16. Which city typically experiences winter during July?
Tokyo
Toronto
Paris
Buenos Aires