The liver’s role is to: A) Mash up food B) Turn water into food C) Help the stomach D) Remove harmful substances from the blood
A train travels a total distance of 600km in eight hours.It travels the first 120 km at a speed of 60km/h, travels the next 180km in two hours and then completes the trip at an unknown speed. What was the average speed of the train for the last leg of the trip? What is the average speed of the train for the entire trip?
two cars having different weights are traveling on a level surface at different constant velocities. Within the same time interval, greater force will always be required to stop a car that has the greater a)weight b)velocity c)kinetic energy d)momentum
If the number on an FM radio dial reads 99.5 MHz, what is the wavelength of this signal? a. 2.23 m c. 3.02 m b. 3.23 m d. 2.03 m
Choose the situation that is an example of heat transfer by radiation. An ice cube melts while you hold it in your hand. B. Hot soup rises to the top of the bowl while cooler soup sinks to the bottom. C. Coastal temperatures are cooler than temperatures in inland areas. D. The sun's energy is transferred through the vacuum of space to the earth
What are the two factors that determine the strength of the gravitational force between two objects? A. size and speed B. density and mass C. mass and distance D. mass and temperature
Which air masses would have cold, moist air? A. continental tropical B. maritime polar C. maritime tropical D. continental polar
Which of the following is an example of convection? a a hot object transferring heat to a cooler one b the rays of the Sun warming the earth c a hot oven warming the air around it d hot air rising and cooler air falling
Examine the diagram below, which shows stages in the water cycle. Which of the stage of the water cycle is caused when water absorbs heat energy from the Sun? a accumulation b evaporation c condensation d precipitation
How are evaporation and transpiration similar? a They are both processes in which water is changed into water vapor. b Both processes occur immediately before precipitation in the water cycle. c They both occur in the biosphere. d They both process water in its solid state.
A transfer of heat within a liquid or gas that involves warm particles moving in currents is a convection. b connection. c correction. d conduction.
Which of the following examples illustrates an energy transfer between the atmosphere and hydrosphere? a plant roots absorbing water from the soil b polar ice reflecting the Sun's light back toward space c convection currents in the ocean mixing warmer and cooler water together d loss of heat from a geothermal vent to the surrounding cooler water
