H2O
Gray water is good to drink.
false
Which of the following represents a chemical reaction? A a sugar cube dissolving in water
B ice cubes forming in a freezer
C ice cream melting in a bowl
D a cake baking in an oven
a cake baking in an oven
What do plants need to grow?
light, water, nutrients, soil
What are the 4 spheres?
atmosphere
biosphere
hydropshere
geosphere
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
a star composed of hydrogen and helium
How much of the Earth's ocean is fresh water?
2.5%
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
brass
Here is a food chain:
sun-->grass-->mouse-->coyote
Which of the following animals might compete with the coyote in this food chain?
a. deer b. rabbit c. owl d. woodpecker
owl
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?
A Rain will fall. B Hurricanes will form.
C Lightning will strike. D Hail will form.
rain will fall
Which of these revolves around a planet?
A an asteroid B a star
C a comet D a moon
a moon
There is more land than water on earth
false
Which material will allow electricity to flow between the battery and the light bulb?
A copper wire B wooden rod
C cotton string D rubber tube
copper wire
A group of students is building a model of an ecosystem. Which of the following organisms should the students select to act as a decomposer?
a. turtle b. mushroom.
c. flower d. spider
mushroom
A city has a temperature of 75 °F, with partly cloudy skies. Weather forecasters are predicting that the air pressure and temperature will drop during the day. Which type of weather is most likely for this area in the late afternoon?
A rainy B sunny
C snowing D hailing
rainy
Gravity is responsible for the
A orbits of the planets around the Sun.
B rotation of a planet on its axis.
C tilt of Earth’s axis.
D phases of the Moon.
orbits of the planets around the Sun
Some of the salt in seawater comes from undersea volcanoes.
true
All living things contain which element?
A helium B sodium
C copper D carbon
carbon
Which animals are most likely to carry the seeds found in berries from the parent plant to another area?
A. bees B. birds
C. flies D. caterpillars
birds
Which location on Earth receives the most direct sunlight?
A the deserts B the South Pole
C the equator D the Western Hemisphere
the equator
The largest body in our solar system is
A Earth. B the Sun.
C Jupiter. D the Moon.
the Sun
How much of Earth's surface is covered in water?
71%
What do water, aluminum, redwood trees, and valley quail all have in common?
A They are all pure elements. B They are all made of cells.
C They are all living creatures. D They are all made of atoms.
They are all made up of atoms
Decomposers are important in the food chain because they
A. produce their own food using light from the Sun.
B. stop the flow of energy from one organism to another.
C.break down dead organisms and recycle nutrients into the soil.
D. are microscopic and other organisms cannot consume them.
break down dead organisms and recycle nutrients into the soil.
Snowfall on a road are what spheres?
hydrosphere and geosphere
Craters on the Moon were created by
comets