Unit 8.4 Quiz 1

Seasons were tracked by ancient people using which of the following?

• moon phases

• eclipses

• constellations

• storms

Answer explanation

Ancient people tracked seasons primarily using constellations, as these star patterns change with the seasons, providing a reliable method for marking time and agricultural cycles.

Tags

NGSS.MS-ESS1-1

What celestial movement makes a year on Earth approximately 365 days?

• Earth’s orbit/revolution

• Earth’s rotation

• The Moon’s rotation

• Earth’s tilt

Answer explanation

A year on Earth is approximately 365 days due to Earth's orbit or revolution around the Sun. This movement defines the length of a year, while Earth's rotation affects day length.

How does the Sun’s position in the sky change throughout the day?

• There is no change

• Randomly

• It moves from North to South

• It moves from East to West

Answer explanation

The Sun's position changes throughout the day as it appears to move across the sky. It rises in the East and sets in the West, making the correct answer "It moves from East to West." This movement is due to the Earth's rotation.

Tags

NGSS.5-ESS1-2

A constellation is a group of visible ________ that form a pattern when viewed from Earth.

• creatures

• planets

• stars

• patterns

Answer explanation

A constellation is defined as a group of visible stars that create a recognizable pattern when observed from Earth. Therefore, the correct answer is 'stars', as they are the celestial bodies that form these patterns.

Constellations may only be visible during certain seasons due to Earth’s orbit around  __________.

• the Sun

• Mars

• the Moon

• Earth

Answer explanation

Constellations are visible at different times of the year because as Earth orbits the Sun, our perspective changes, revealing different stars and constellations in the night sky.

Tags

NGSS.MS-ESS1-1

Why does the North Star always point “North” in the sky?

• The North Star is only a myth - no star actually stays in the North.

• The North Star is like our Sun and has a solar system just like Earth’s.

• The North Star is found at the North Pole of the Earth.

• The North Star is lined up with Earth’s axis.

Answer explanation

The North Star, or Polaris, is aligned with Earth's rotational axis. This alignment makes it appear to stay in a fixed position in the sky, directly above the North Pole, guiding navigators to true north.

What does the rotation of the earth cause us to experience?

• a year

• day and night

• seasons

• an eclipse

Answer explanation

The rotation of the Earth on its axis causes different parts of the planet to face the Sun or move away from it, resulting in the cycle of day and night. This is the primary experience we have due to Earth's rotation.

Tags

NGSS.MS-ESS2-6

One rotation of earth on its axis is equal to one:

• day.

• week.

• month.

• year.

Answer explanation

One rotation of Earth on its axis takes approximately 24 hours, which defines one day. Therefore, the correct answer is 'day.' Other options like week, month, and year represent longer time periods.