Snowflakes

How many arms do snowflakes typically have?

• Four

• Five

• Six

• Eight

What determines the general shape of a snowflake crystal?

• The speed of the wind

• The temperature at which it forms

• The color of the sky

• The time of day

Why is it astronomically unlikely to find two identical snowflakes?

• Because they are made of different materials

• Because they follow slightly different paths and encounter different conditions

• Because they are colored differently

• Because they are shaped by different winds

What is a "facet" in the context of snowflakes?

• A round edge

• A flat face on a three-dimensional shape

• A pointed tip

• A curved surface

At what temperature do long, needle-like crystals form?

• 32 degrees Fahrenheit

• 23 degrees Fahrenheit

• 5 degrees Fahrenheit

• 0 degrees Fahrenheit

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why are snowflakes symmetrical?

• Because they are made by humans

• Because they reflect the internal order of the crystal's water molecules

• Because they are cut by machines

• Because they are drawn by artists

What happens when water vapor condenses on a snowflake's surface?

• It melts the snowflake

• It forms a new branch

• It changes the color of the snowflake

• It makes the snowflake disappear

What shapes do snowflakes take at temperatures around -20°C (-4°F)?

• Dendrites and Plates

• Needles and Columns

• Solid Prisms and Thin Plates

• Sections and Needles

At what temperature range do solid prisms of snowflakes form?

• -35°C to -30°C

• -10°C to -5°C

• -20°C to -15°C

• 0°C to 5°C

Tags

NGSS.MS-PS3-4

What factor, besides temperature, affects the shape of snowflakes?

• Wind speed

• Humidity

• Altitude

• Air pressure