space and earth
When on the moon astronauts weigh one-sixth of what they do on
earth. Why does the moon have 1/6 of the gravitational force on Earth?
a. The moon has 1/6th the atmosphere of earth
b. only on-sixth of the sun's energy that reaches Earth, reaches the moon.
c.The moon is located 600,000 miles from Earth.
d. The moon has 1/6th the mass of earth.
D. Fer sure: Because Gravity is directly related to the objects' combined mass.
3 main gases that make up the Earth's atmosphere (x5)
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
x7
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
c. breaking down and carrying away soil
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
Earths seasons are caused by the Earth's tilt and orbit in space. The gravitational force from which of the following determines Earth's orbit in space?
a. the sun
b. earth
c. Moon
d. Jupiter
A.Earth circles the sun during its orbit and it is the sun that determines the specifics of the orbit
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
Which would be an example of kinetic energy:
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
b. a ball rolling down a hill
x5
Water from the oceans pounds against a rock for hundreds of years. Eventually a hole forms in the rock. This is known as
a. erosion
b. weathering
c. deposition
d. construction
a. weathering
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
What is the deepest part of the earth (x7)
a. mantle
b. outer core
c. inner core
d crust
c. inner core
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
x 5
Where would you find icebergs?
a. hydrosphere
b. mesosphere
c. lithosphere
d. atmosphere
a. hydrosphere (
All the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds.
‘Oxygen also occurs in the hydrosphere in the form of water, of which it makes up nearly 89% by weight, and in the Earth's crust.’
x5
The temperature is 25 degrees ... What type of weather would you expect
a. rain
b. snow
c. cloudy
d. clear
b. snow
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
x3
Which layer of the atmosphere is closest to the earth?
a. atmosphere
b. troposphere
c. stratosphere
d. exosphere
b. troposphere
When 2 oxygen atoms bond chemically with 2 hydrogen atoms, hydrogen peroxide if formed. Which phase defines this substance?
a. an element
b. a molecule
c. a compound
d. a mixture
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
Which layer do we live on?
a. inner core
b. mantle
c. outer core
d. crust
d crust
You moved a goldfish bowl , a book and a flower vase from the floor to the 3rd shelf. What type of potential energy does each object have?
a. elastic potential
b. gravitational potential
c. chemical potential
d) kinetic potential
Which is the best example of a chemical change?
a. fireworks exploding
b. cutting paper
c. crushing a can
d. melting snow
Which of teh methods listed is not a method used for separating mixtures?
a. sifting b. flotation
c. filtration d. dissolving
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
Which material is a pure element?
a. alcohol
b. copper
c. salt
d. water