5. It is a giant ball of fire. A constellation B. earth C. moon D. star 6. Which of these stars are the youngest? A orange stars C. white stars B. red stars D. yellow stars 7. Which statement is true about stars? A. Stars do not move. B. Orion consist of five stars that seem to form letter W. C. Big Dipper and Little Dipper are examples of constellations D. Constellations help navigators to whenever they are lost in the sea. 8. A star's color is a guide to its temperature. What does this mean? A. All stars without color have no temperature B. The color of the stars depends on its temperature. C. All stars with the same color have the same temperature. D. Red is the color of the stars with the highest temperature. 9. Why is the North Star used as a guide for locating directions? A. It is the brightest star in the sky. B. It is a star in the constellation Ursa Minor. C. It appears to remain in the same position. D. It is the most beautiful star in the Northern hemisphere. 10. Why can u see a very distant object through a telescope? A. A telescope works like a camera B. A telescope makes a big object look real. C. A telescope can make an image very clear D. A telescope can make the image of an object very much bigger.​