SC.5.E.5.1 Form B

1. Stars have many similarities and many differences. Which of the following is a similarity of all stars?

• All stars are the same size.
• All stars are the same distance from Earth.
• All stars emit energy and some of it is in the form of light.
• All stars can be seen without a telescope on a clear night.

2. Marcus has learned that the Sun is a star, but not the largest star in our galaxy. Which answer best explains why Earth receives more energy from the Sun than from any other star?

• The Sun is the closest star.
• The Sun is a very young star.
• The Sun is the hottest star in the galaxy.
• The Sun gives off more energy than any other star.

3. Which of the following best describes what makes up a galaxy?

• gas, dust, and many stars
• a star and planets orbiting the star
• one planet and a moon orbiting the planet
• a group of several stars that make a shape in the sky

4. All stars in the sky, except the Sun, appear to be points of light. Which best explains why these stars appear to be so small?

• These stars are cooler than the Sun
• These stars are smaller than the Sun.
• These stars are farther away than the Sun.
• These stars are made of different chemicals than the Sun.

5. Sirius is the brightest star in the night sky. Which statement about Sirius is true?

• Sirius must be the closest star to Earth.
• Sirius must be the hottest star in the sky.
• Sirius must be larger and have more energy than any other star in the galaxy.
• Sirius must be very hot, very large, and close to Earth, compared to other stars.