Sheet # 45/Solar System
Name: _____________________ Date_____________
Express all answers in scientific notations.
1) The averge diameter of the Sun is 1.4 million km. Write the diameter in scientific notation.
2. A supergiant star can have a diameter up to 1,000 times that of the Sun. What is the diameter of the supergiant star?
3. The surface temperature of the hottest stars may be as high as 50,0000C. Write the temperature in scientific notation.
4. The Sun has been shining for 4.5 billion years. Write the years in scientific notation.
5. When the temperature inside the Sun reaches about 15,000,0000C, nuclear reactions release tremendous amount of energy. Write the temperature in scientific notation.