Teresa saw a large star outside of her window at ten o'clock last night.
if teresa looks out of her window at ten o'clock tonight, will she be able to see her star again?

a.
no, her star will be on the other side of the earth.

b.
yes, her star will have appeared to move very slightly to the east.

c.
yes, her star will have appeared to move very slightly to the west.

d.
no, her star will be on the other side of the sun.

We all use gps today, even if we don't drive yet. i bet you have been in the car with a parent and they have asked you to get out your phone to find a specific location. in your car, on the phone, you are using a very sophisticated technology. gps satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. gps receivers take this information and use trilateration to calculate the user's exact location. essentially, the gps receiver compares the time a signal was transmitted by a satellite with the time it was received. the time difference tells the gps receiver how far away the satellite is. now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. what type of signal is utilized by the gps satellite?

Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

How will the system respond to a temperature increase?