Science review 1
x 6
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
Which of the following planets is know as Earth's twin?
a Mercury
b Venus
c Mars
d Jupiter
a. oxygen, argon and nitrogen
b. nitrogen, oxygen, and carbon dioxide
c. oxygen, carbon dioxide, and helium
d. carbon dioxide, helium, and oxygen
Weathering and erosion are harming the land by
a. building up new land for new habitats
b. breaking down land so new buildings can be built
c. breaking down and carrying away soil
d. forming new lakes
x5
which is the primary consumer
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
What is a mixture?
a. salt water
b. petroleum jelly
c. water
d. aluminum foil
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
When light shines through a prism it bends. This is also know as
a. reflection
b. refraction
c. absorption
d. shadow
a. wind speed
b. humidity, moisture in the air
c. amount of rain
d. wind direction
Salt water dissolves quicker in cold water by
a. pouring
b. stirring
c. letting it sit still
d. adding a little at a time
a. deposition because the waves carries sand from the beach and deposits it into the water
b. deposition because the waves wash all the sand off the beach
c. wind erosion , because the sand is moving from the beach to the water
a rabbit
b. arctic fox
c. polar bear
d. reindeer
A tomato is considered a fruit because it is produced from a flower and contains seeds. Tomatoes are produced by
a. spore reproduction
b.sexual reproduction
c. asexual reproduction
d. decomposing reproduction
Of what are pure gold and pure copper examples:
a. compounds
b. elements
c. mixtures
d. solution
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
x3
If the Earth revolves around the sun for 4 yrs, how many times does the moon revolve around the Earth?
a. 12 b. 24 c. 36 d. 48
d.48
Which would be an example of chemical potential energy: (x3)
a. a spring compressed
b. a ball rolling down a hill
c. a child sitting at the top of a slide
d. powder on the tip of a match
d. powder on the tip of a match
a . sexual reproduction
b. asexual reproduction
c. both sexual and asexual reproduction
d. seeds
x5
Water from the oceans pounds against a rock for hundreds of years. Eventually a hole forms in the rock. This is known asa. erosion
b. weathering
c. deposition
d. construction
x 7
What is evaporation?
a . gas turns to liquid
b. solid turns to liquid
c. liquid turns to gas
d. water turns to ice
c. liquid turns to gas
A single strawberry plant can produce long stems called runners. When runners reach open ground, they can grow roots and develop into a new strawberry plant. This is an example of
a. sexual reproduction
b. respiration
c. asexual reproduction
d. seed production
Frank has a beaker with a mixture of salt and water. He would like to recover the salt from the water. Which would be the best method to accomplish this?
a. evaporation b. filtration
c. freezing d. refraction
What type of substance is water?
a. compound
b. element
c. mixture
d. solution
The Earth is mostly covered by oceans. Oceans are found in the (x7)
a. hydrosphere
b lithosphere
c. atmosphere
d. troposphere
a. hydrosphere
a. mantle
b. outer core
c. inner core
d crust
a. runner reproduction
b. sexual reproduction
c. asexual reproduction
d. multicellular reproduction
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
Frozen orange juice is place in a bowl. Ager a few minutes it begins to melt. What type of change has occurred?
a. chemical
b. melting
c. physical
d. mixture
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.
x3
Which of the following is a physical reaction?
a. lighting a match b. rusting metal
c. baking a cake d. making sugar water
Which is an example of a chemical change?
a. melting ice
b. dissolving salt in water
c. hammering metal into a thin sheet of foil
d. burning a piece of paper
Where would you find icebergs?
a. hydrosphere
b. mesosphere
c. lithosphere
d. atmosphere
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
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
The temperature is 25 degrees ... What type of weather would you expect
a. rain
b. snow
c. cloudy
d. clear
x6
You are running a race. Which system of the body helps you move?
a. skeletal
b. muscular
c. digestive
d. nervous
b. muscular
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.
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
Which term defines a mixture in which one substance dissolves in another?
a. element
b. mixture
c. molecule
d. solution