Which action will result in a product with new chemical properties?
a. Shredding news paper
b. breaking a mirror
c. cutting wood
d. popping popcorn
popping popcorn
100
What will happen when a balloon with a negative charge and a glass rod with a positive charge are brought together?
the balloon will be attracted to the rod
100
What is an omnivore? Give an example.
An animal that eats both plants and meat.
black bear etc.
100
Above a continent, a warm air mass slowly passes over a cold air mass. As the warm air begins to cool, clouds form. What will most likely happen next?
rain will fall
100
Gravity is responsible for what?
a. orbits of the planets around the Sun
b. rotation of a planet on its axis
c. tilt or the earths axis
d. phases of the moon
a. orbits of plants around the sun
200
Which material would allow electricity to flow between a battery and a light bulb?
a. copper wire
b. wooden rod
c. cotton string
d. rubber tube
copper wire
200
Which best describes a parallel circuit?
a. electricity flows along one pathway
b. the flow of electricity comes from one source
c. electricity flows along more than one pathway
d. the flow of electricity comes from more than one source
B. Electricity flows along more than one pathway
200
Which organ removes cell waste from the blood?
the kidney
200
Why is watering plants in the early morning a way to conserve water?
Smaller amounts of water evaporate in the cool morning.
200
Why are most fossils found in sedimentary rocks?
a. sedimentary rocks are not very cold
b. organisms live only in areas with sedimentary rock
c. organisms can be preserved in sedimentary rocks
d. sedimentary rocks are found only at the surface of the ground.
c. organisms can be preserved in sedimentary rocks
300
What do water, aluminum, redwood trees, and valley quail all have in common?
a. all pure elements
b. all made of cells
c. all living creatures
d. all made of atoms
they are all made of atoms
300
What is an electromagnet?
It is often made of iron, that is temporarily magnetized by an electric current flowing through a coil that surrounds it.
300
The digestion process begins where?
the mouth
300
What location on the Earth receives the most direct sunlight?
the equator
300
What is at the center of our solar system?
a. a medium planet with an atmosphere
b. a star composed of carbon and nitrogen
c. a black hole that was once a star
d. a star composed of hydrogen and helium
D. a star composed of hydrogen and helium
400
Sterling silver is a combination of silver and copper. Which of the following is also a combination of two or more metals?
a. aluminum
b. lead
c. gold
d. brass
d. brass
400
When electric current flows through the metal filament of a light bulb, electrical energy is converted to what?
heat and light energy
400
What is an example of a decomposer? What does it do?
Mushroom. They are organisms that break down dead or decaying organisms.
400
What would most likely cause a hurricane to decrease its strength?
a. staying over a warm body of water
b. increasing the number of large clouds
c. moving over a continent
d. moving toward tropical waters
c. moving over a continent
400
The freezing and thawing action of water affects a rocky by...
a. transforming the rock into igneous rock
b. chemically changing the rock
c. breaking it into smaller pieces
d. leaving behind sedimentary particles from evaporated solutions
c. Breaking it into smaller pieces
500
Plants and animals are composed of organic compounds. What are the 4 common elements found in organic compounds? (Think of the periodic table).
carbon, hydrogen, oxygen, nitrogen
500
What is a series circuit?
It is when the same current flows through both light bulbs.
500
Salt concentration, water temperature, plankton and the whale shark are all used to describe what in the ocean?
ecosystem
500
Where would the air pressure be the greatest?
top of a mountain
500
A student is trying to identify a mineral that has a nonmetallic luster and is black. It can also be scratched with a fingernail. According to the mineral reference sheet, the unidentified mineral is most likely...
a. mica c. hornblende
b. magnetite d. quartz