SC.5.E.5.1 Galaxies

A star named Sirius appears as the brightest star in the nighttime sky, even though a star named Pollux actually gives off more light. Which of the following best explains why Sirius appears brighter than Pollux in our nighttime sky?

• Sirius is closer to Earth than Pollux.

• Sirius has different gases than Pollux.

• Sirius has a different color than Pollux.

• Sirius is farther from Earth than Pollux.

Tags

NGSS.5-ESS1-1

Kayla learned in class that a galaxy consists of gas, dust, stars, moons, planets and other objects that orbit stars. She also learned that objects in the galaxy give off different forms of energy. What objects in the galaxy give off light and heat?

• stars

• planets

• stars and planets

• moons and stars

Tags

NGSS.4-PS3-2

Canis Majoris is a red supergiant star and the Sun is an average, medium-sized star when compared to other stars in the galaxy. Which statement best explains why the Sun appears to be larger and brighter than Canis Majoris in our sky?

• The Sun is closer to Earth than Canis Majoris, so it appears larger.

• The Sun is a yellow star, which makes it seem very large and bright.

• Earth's atmosphere magnifies the Sun's appearance, making it look larger.

• Earth's gravity brings the Sun closer to Earth each day, making it seem larger.

Tags

NGSS.5-ESS1-1

Chase read that astronomers learned about our home galaxy, the Milky Way, using satellites and telescopes. Based on what astronomers know today, what makes up the Milky Way Galaxy?

• One star, some planets, and their moons

• Comets, asteroids, planets, and their moons

• Millions of planets and their moons that orbit a star

• Millions of stars, objects orbiting those stars, gas, and dust

Rigel is a star in the night sky that is larger than Earth. Why does Rigel look like a tiny point of light?

• Rigel is moving very fast.

• Rigel is located very far from Earth.

• The atmosphere blocks most of Rigel’s light.

• Most of the light from Rigel is absorbed by galaxies, so it does not reach Earth.

Tags

NGSS.5-ESS1-1