In a light microscope, light passes through the object and produces an image. What produces images in the scanning electron microscope and the transmission electron microscope?
What are electrons
100
What is the transfer of energy from place to place by the motion of gas or liquid?
What is convection
100
In what direction foes centripetal force point?
towards the center of the circle
100
What plugs volcano openings?
Hardened lava from earlier eruptions
100
What are the three states of matter?
What is gas, liquid, solid.
200
What is a eukaryotic cell?
What is a cell that has a nucleus
200
Where is the troposphere and how is it heated?
It extends from 0 to 10 km above Earth's surface and is heated by the ground.
200
What is the measure of the amount of matter an object contains?
What is mass
200
What determines the shape of a volcano?
What is the type of magma
200
What are 2 signs of a chemical change?
Production of odor, change in temperature, change in color, formation of bubbles, formation of solid.
300
The cell membrane is made up of?
What are lipids
300
Which waves have more energy than visible light?
What are ultraviolet waves
300
What unit is used for pressure?
What is pascal
300
What is the geologic time scale?
A chart that shows Earth's history
300
What is energy efficiency?
The measurement of usable energy after an energy conversion.
400
What process releases energy by using oxygen to brake down sugar?
What is cellular respiration
400
The temperature at which air will reach saturation is called what?
What is dew point
400
What is the law of conservation of energy?
Energy cannot be created or destroyed
400
What is the main use of coal?
It is used in industry to make heat for generating electricity and to provide power to manufacture steel and cement
400
What does the kinetic theory of matter say?
All the particles in matter are constantly in motion
500
What do you call diffusion of water through a membrane?
What is osmosis
500
What is the calm center of a hurricane called?
What is the eye
500
Levers are classified according to what?
Where the fulcrum is
500
What element is used to produce nuclear energy?
What is uranium
500
What temperature scale is often used by scientists?