1. BELLWORK 2/26 AND 2/27 ➤ Sheryl observed a type of bacteria that was not shown in the guide she used to identify bacteria commonly found in pond water. ➤ How would the discovery of a new type of bacteria affect the science of microbiology. ➤ A-It would demonstrate that bacteria were the earliest types of living things ➤ B-It would prove that bacteria evolve in the same ways that other organisms do ➤ C-It would add to the list of bacteria known to live in freshwater habitats ➤ D-It would change the way scientists discover new types of bacteria

2. EARTH’S ROTATION AND REVOLUTION By, Mrs. Brockhaus

3. EARTH’S ROTATION CAUSES DAY AND NIGHT ➤ Axis of Rotation-imaginary line running through Earth’s center that the Earth rotates around, with North and South pole being the ends ➤ Rotation-Earth spinning on its axis ➤ At any point about 1/2 of Earth is in sunlight and the other 1/2 is in darkness ➤ Earth’s rotation takes 24 hours ➤ Rotates at a 23.5 degree angle ➤ What would we call it when the Earth is in the middle of the sunlit side or darkness?

4. EARTH’S TILTED AXIS AND ORBIT CAUSES SEASONS ➤ Earth is pulled towards Sun’s center. What do we call that? What would happen to Earth without it? ➤ Revolution- Earth’s orbit around the sun ➤ Earth’s revolution takes 1 year ➤ Thumb Visual

5. SEASONAL PATTERNS ➤ Equinox-sunlight shines equally on the northern and southern hemispheres ➤ Solstice-the area of sunlight is at a maximum in one hemisphere and a minimum in the other hemisphere

6. FORMATIVE NUMBER ONE ➤ What causes day and night? ➤ What happens to Earth’s axis of rotation as Earth orbits the sun? ➤ How do areas of sunlight in the two hemispheres change over the year? ➤ If you wanted to enjoy longer periods of daylight in the summertime, would you head closer to the equator or farther away? Why? ➤ How do the average temperature and the seasonal changes at the equator differ from those at the poles?