Study the graph shown. it is a graphic of a car trip taken by karen and her mother. the starting position (0, 0) is their home. calculate the average speed of the car during the first hour of the trip.

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3