Biology
What is the original source of energy in all ecosystems?
the sun
3 main gases that make up the Earth's atmosphere
a. oxygen, argon and nitrogen
b. nitrogen, oxygen, and carbon dioxide
c. oxygen, carbon dioxide, and helium
d. carbon dioxide, helium, and oxygen
a. oxygen, argon and nitrogen
How many days in a revolution around the Sun?
365 1/4 days
A skydiver jumps from a plane. Gravity is pulling the jumper down. A strong gust of wind pushes against the jumper from the right. Which of the following happens? x7
a) the wind did not affect the jumper and he continues to fall straight down.
b) the jumper continues to fall down but the wind pushes him to the left
c) the jumper continues to fall down but the wind pushes hime to the right
b) the jumper continues to fall down but the wind pushes him to the left
How much of the earth' s surface is covered with water?
a. 1/4 b. 2/4
c. 3/4 d. 3/8
c. 3/4
What occurs at the boiling point of a substance?
a. the substance changes from a gas to a solid
b. the substance changes from a liquid to a solid
c. the substance changes from a solid to a liquid
d. the substaqnce changes from a liquid to a gas
All living organisms are dependent on plants because
Plants are producers
grass....bird .....snake.....hawk
Which is the primary consumer?
bird
x4
Salt water dissolves quicker in cold water by
a. pouring
b. stirring
c. letting it sit still
d. adding a little at a time
b. stirring
Which part of the atom is positive?
A protons
B neutrons
C electrons
D nucleus
A protons
Water has a density of 1 g/mL. Oil has a density of 0.61 g/mL
What would happen if the oil is put into the water? Float or sink?
Float
What causes night and day (24 hours)?
b. rotation
Which will best increase the solubility of a tablespoon of sugar poured into a cup of water?
a. heating the mixture
b. stirring the mixture slowly
c. cooling the mixture
d. adding more water to the mixture
All living things contain at least one _____.
cell
Which of the following animals changes its fur color during the winter to help protect it in its surroundings (x4)
a rabbit
b. arctic fox
c. polar bear
d. reindeer
b. arctic fox
What is a mixture?
a. salt water
b. petroleum jelly
c. water
d. aluminum foil
a. salt water
Tommy placed a black, white, silver, and blue can under a heat lamp with a thermometer in each one. Which one of the cans will be the coolest? (x4)
a. black, because it absorbs the heat
b. blue, because it wasn't under direct light
c. white because it would reflect light
d. silver, because it is shiny
c. white, because it would reflect light
x5
Frozen orange juice is place in a bowl. After a few minutes it begins to melt. What type of change has occurred?
a. chemical
b. melting
c. physical
d. mixture
c. physical
Megan lights a candle and watches it burn. She observes that some wax melts, some smoke comes from the wick, the wick burns, and then the melted was hardens again.
Which represent a chemical change? (x5)
a. Some wax melts, and smoke comes from the wick.
b. Some wax melts, and later melted wax hardens again.
c. The wick burns, and smoke comes from the wick.
d. Smoke comes from the wick, and later melted wax hardens again.
c. The wick burns, and smoke comes from the wick.
What separates the inner small, rocky planets from the outer giant, gaseous planets?
a Sun
b Earth
C Asteroid Belt
D Pluto
C Asteroid Belt
Which of the following is a physical reaction?
a. lighting a match b. rusting metal
c. baking a cake d. making sugar water
a. making sugar water
Birds use their beaks adapt to the environment by
a) being able to protect themselves from predators
b. being able to use their beaks to consume food
c. it helps them to build their nest
b. being able to use their beaks to consume food
The environmental protection agency wanted to start using an alternative fuel to cut down on pollution. Which fuel would they chose?
a. ethanol
b. natural gas
c. oil
d. coal
a . ethanol
x5
Oxygen and water chemically combine to make hydrogen peroxide. Hydrogen peroxide is known as
a. an element
b. a molecule
c. a compound
d. a rock
c. a compound
cells...tissue....organs....organs systems
Which level of organization is the most complex?
b. organ systems
Which statement describes the 2 samples of rock (x7)
a. sample b has more mass
b. sample a has less volume
c. sample b has a greater density
d. sample a has a higher freezing point.
What causes the four seasons (autumn, winter, spring, and summer)
The till of the Earth as it orbits or revolves around the Sun.
Which term defines a mixture in which one substance dissolves in another?
a. element
b. mixture
c. molecule
d. solution
List two reactants of photosynthesis?
Water CO2
x4
A student wanted to look at pond water to see what organisms they could find. Which of the following tools would the student use?
a. balance b. graduate cylinder
c. microscope d. magnifying glass
c. microscope
What units does a triple beam balance use?
a. mL
b. Meters
c. Grams
c. gram
grass.... mice....snake...hawk...
What would happen if the mice were removed from the food
a) The grass would increase and the hawk would decrease
b. The snakes would increase and the hawks would decrease
c. The grass would increase and the snakes would decrease
d. The Hawks would increase and the grass would decrease
c
a. texture and melting point
b. density and melting point
c. weight and freezing point
The sun appears to rise in the east and set in the west on Earth. Why does the sun appear to rise and set in this pattern?
A ) earth has. a coutnerclockwise rotation
b. Earth revolves around the sun in a counterclockwise motion
a. earth has a counterclockwise rotation
In which situation is a chemical reaction not taking place
a. salt dissolving in water
b. rusting of an old car in a junk yard
c. burning gasoline in a car
d. digestion of food in our body
What is the purpose of cellular respiration?
Make energy
Which is the best example of a chemical change?
a. fireworks exploding
b. cutting paper
c. crushing a can
d. melting snow
a. fireworks exploding
x5
On a roller coaster, where is the greatest kinetic energy?
a. top of tallest hill
b. bottom of tallest hill
b. bottom of tallest hill
grass......? .......fox
x6
What is missing?
a. snake
b. mouse
c. hawk
d. flower
b. mouse
When light shines through a prism it bends. This is also know as
a. reflection
b. refraction
c. absorption
d. shadow
b. refraction
Which layer of the atmosphere is closest to the earth where weather occurs?
a. atmosphere
b. troposphere
c. stratosphere
d. exosphere
b. troposphere
Which list correctly identifies the elements that make up a water molecule?
a. oxygen, hydrogen, nitrogen
b. oxygen, hydrogen, carbon
c. oxygen, hydrogen, oxygen
d. hydrogen, oxygen, hydrogen
d. hydrogen, oxygen, hydrogen
Which is the chemical equation for photosynthesis?
6H2O + 6CO2 yields C6H12O6 +6O2
Which of the following are gases?
a) copper, oxygen, nitrogen
b. ice, hydrogen, carbon
c. water vapor, aluminum, carbon dioxide
d. water vapor, carbon dioxide, oxygen
d. water vapor, carbon dioxide, and oxygen
Which of the following planets are located before and after Earth?
a. Mercury and Mars
b. Venus and Saturn
c. Venus and Mars
d. Mercury and Neptune
c. Venus and Mars
This adaptation allows animals to blend in with their surroundings
camouflage
Which type of symbiosis occurs between a bee and a flower. The bees pollinate the flowers and the bees get nectar for food? x7
A. Commensalism
B Mutualism
C Parasitism
B Mutualism
Which weather phenomena forms over warm waters close to the equator?
A Hurricanes
As water evaporates, which best explains the change that is occuring?
a. a gas changes to a liquid
b. a gas changes to a solid
c. a liquid changes to a gas
d. A liquid changes to a solid