Describing and Measuring Motion
What is the SI unit for time?
seconds
What is Pangaea?
Supercontinent that had all of the present continents stuck together
Acceleration refers to __________, _____________, or changing ______________.
Increasing speed, decreasing speed, direction
Which has a greater speed, a car that travels 600km in 3 hours or a motorcycle that travels 750km in 5 hours? What are their speeds?
The car (200 km/h)
Motorcycle (150 km/h)
What is the formula for speed?
S = D / T
What is created by convergent tectonic plate movement?
Mountains and volcanoes and even earthquakes (ex. Mount Everest)
What is the formula for acceleration?
A= (final speed - initial speed) / time
Traveling at a speed of 50 km/h, how long is it going to take to travel 200 km?
4 h
If your reference point is moving and you are moving in the same direction and speed, you might not realize that you are in motion.
Describe transform movement of tectonic plates.
The tectonic plates slide past each other (creates earthquakes)
What type of graph do you use to display acceleration?
Speed vs time
A car starts from standing top and in 5 seconds is travelling 30 m/s. What is the acceleration?
6 m/s2
What is velocity?
Speed in a given direction
Why do Earth's plates move?
They move because below the plates are liquid molten rock that lets the plats slip and move around (kind of like ice cubes floating in a glass of water)
A rocket releases a satellite into orbit around Earth. The satellite travels at 2000 m/s in 25 seconds. What is the acceleration?
80 m/s2
The _____________ the slope, the greater the speed.
steeper
What is the theory of plate tectonics?
Anna drives first 320 km in 2 hrs and next 280 km in next 4 hrs. What is her average speed for the entire trip in km per hour?
100km/h