Life Science
When a fox builds a den, it is demonstrating
a. an instinct
b. dominant traits
c. a physical trait
d. environmental influences
a. an instinct
Which of the following is true about mountains?
a. They are built up by waves.
b. They are built up by water carrying sediment away.
c. They are built up when plates push together.
d. They are made by rivers cutting through land.
c. They are built up when plates push together.
Which is an example of a chemical change?
a. water boiling
b. ice melting
c. seismic activity
d. metal rusting
d. metal rusting
Two balloons move closer when they are placed close together. What is the BEST explanation?
a. They have mixed charges.
b. They have the same charge.
c. They have opposite charges.
d. They are uncharged.
c. They have opposite charges.
How can you change matter from one state to another?
a. by changing its container
b. by adding or removing heat
c. by dividing it in half
d. by changing its volume
b. by adding or removing heat
Which of the following is found in a plant cell but NOT in an animal cell?
a. cell membrane
b. chloroplasts
c. nucleus
d. cytoplasm
d. mitochondria
b. chloroplasts
Which of these land forms were LEAST affected by erosion?
a. mesa
b. plain
c. canyon
d. sand spit
b. plain
Mrs. Culliver made breakfast. First she cracked several eggs and stirred them. Then she grated some cheese. Next she added some pepper. Finally, she put it in a hot skillet and cooked the ingredients. Which of the steps is NOT a physical change?
a. cracking the eggs
b. grating the cheese
c. grinding the pepper
d. cooking the eggs
d. cooking the eggs
Which type of magnets can be switched off when magnetic attraction is not needed?
a. bar magnets
b. magnetic fields
c. electromagnets
d. static magnets
c. electromagnets
Mr. James leaves an ice cube sitting in a glass next to a window. After an hour, the ice changes into a clear substance. Finally, after three days, there appeared to be nothing in the glass at all. what states of matter did the ice cube pass through (in order)?
a. liquid, gas, solid
b. solid, gas, liquid
c. solid, liquid, gas
d. gas, liquid, solid
c. solid, liquid, gas
Which of the following is a beneficial microorganism?
a. staph bacteria that causes boils
b. mold that produces penicillin
c. algae that causes red tide
d. fungus that causes ringworm
b. mold that produces penicillin
Which landform is NOT built by a CONSTRUCTIVE force?
a. delta
b. canyon
c. sand dune
d. shield volcano
b. canyon
Which of the following describes a chemical change?
a. a copper bracelet gets twisted into a new shape
b. a copper bracelet gets melted into liquid copper
c. a copper bracelet turns green after it is worn
d. a copper bracelet is painted red
c. a copper bracelet turns green after it is worn
Which of these is a conductor of electricity?
a. water
b. rubber
c. plastic
d. wood
a. water
Particles at a higher temperature move
a. the same as at lower temperatures
b. slower than at lower temperatures
c. change chemically
d. faster than at lower temperature
d. faster than at lower temperatures
Which is an example of a learned behavior?
a. left-handedness
b. a racoon eating out of a trash can
c. an opossum lying still when it feels threatened
d. an artic fox turning white in the winter
b. a racoon eating out of a trash can
At the mouth of a river that empties into an ocean, a river delta is formed. The delta is a result of
a. erosion
b. deposition
c. pollution
d. condensation
b. deposition
Acid rain breaking down stone is a
a. chemical change
b. physical change
c. state change
a. chemical change
What does an electromagnet have that a bar magnet does not have?
a. coil of wire
b. an electric field
c. magnetic poles
d. magnetic field
a. coil of wires
As the temperature of water increases from 0 degrees C to 100 degrees C, what changes of state does it pass through--going coldest to hottest?
a. ice, water vapor, liquid water
b. liquid water, ice, water vapor
c. water vapor, ice, liquid water
d. ice, liquid water, water vapor
d. ice, liquid water, water vapor
From what structure do vertebrates get their name?
a. skull
b. number of legs
c. ribs
d. backbone
d. backbone
Canyons, such as the Grand Canyon and Providence Canyon, were formed as a result of
a. a volcano
b. an earthquake
c. erosion
d. a glacier
c. erosion (destructive process)
What is NOT a clue of a chemical change?
a. change in odor
b. change in temperature
c. change in color
d. change in shape
d. change in shape
Which type of electricity is considered a reliable source of electricity?
a. static (naturally occurring electricity)
b. current (human-harnessed electricity)
b. current (human-harnessed electricity)
This is the change of state from a gas to a liquid.
a. condensation
b. evaporation
c. freezing
d. sublimation
a. condensation