What is the central idea of How far away is that lightning? A: The higher able to count between when you see lighting in here thunder, the safer it is to go outside to witness that event in nature.
B: counting how many seconds pass between when you see learning in here thunder can tell you how far away it is because sound and light travel at different speeds.
C: wow light and fan usually travel the same speed the light from lightning strikes is so fast so we stuck with the process it and end up processing sound first.
D: The widely held beliefs that you can calculate the distance of lightning by counting and that lightning doesn’t strike twice are actually supported by science.

In the story "seventh grade," how do victor's hopes and expectations about teresa at the beginning of the school day compare with his hopes and expectations about teresa at the end of the school day? his hopes and expectations are exactly the same at the end of the day. his hopes and expectations are completely different at the end of the day. his hopes and expectations are strengthened by the end of the day. his hopes and expectations are weakened by the end of the day.

Match the elements of historical analysis to the corresponding information about the gettysburg address.

Skill check questions rearrange the paragraphs below into the correct sequence. that's because engineers on the ultraclean project have invented a self-cleaning, antibacterial metal surface that repels water with an intricate layer of laser-engraved valleys. when it rains, the lotus does not become damp; the water simply trickles off in fat droplets, taking any bugs and dirt with it. the drudgery may not be around much longer, however, if a team of italian scientists has anything to do with it “it's simply an amazing plant,” concluded professor luca romoli, leader of the project, “and we've succeeded in mimicking it. magnifico! ” few tasks in life hold less joy than scrubbing the ghost of somebody else’s porridge from a saucepan. the starting point for the research was the leaves of the lotus flower.