Science Problems

Pahoehoe is 

• cooler, slower moving lava
• fast moving lava
• volcanic ash 
• lava with a rough, chunky surface

Igneous Rock that cools very quickly when it forms may have a texture that is

• smooth and shiny with no visible rain
• multicolored and banded
• course grained
• made up of jagged grains

An earthquake is –

• crust through which lava escapes
• a sudden movement in the earth's crust
• a kind of chemical weathering that changes the earth
• a huge wave that washes over the earth

What do atoms contain?

• elements, neutrons, and bonds
• protons, neutrons, and electrons
• protons, molecules, and elements
• electrons, protons, and bonds

Earth would not have seasons if—

• it did not rotate
• it was slightly closer to the sun
• it was no tilted on its axis
• it had more than one moon

Which of these is the best measure of how much space an object or substance takes up?

• mass
• length
• volume
• density

Conductor or insulator?  Plastic toy car

• Conductor
• Insulator

Conductor or insulator?  Metal wire

• Conductor
• Insulator

A food web is a more realistic model of the flow of energy through an ecosystem than a food chain because - 

• most organisms depend on more than one species for food
• each organism in a food chain represents multiple feedings
• most organisms depend on just one species for food
• each organism in a food web represents a single feeding

Why are coal, oil, and natural gas considered nonrenewable resources?

• There is a limited supply, and they can be replaced in a short period of time.
• There is not a limited supply, and they cannot be replenished in a short period of time.
• There is a limited supply, and they cannot be replenished in a short period of time.
• There is not a limited supply, and they can be replaced in a short period of time.