BenchmarkMarch Name______________________________

1. An alligator is classified as an organism that

has _scales and legs_.

2. __Centimeters __ is the unit of

measurement that would be used for the instrument above.

3. A hard boiled egg will float in a container of

water if salt is added to the water. __ The salt __ is the independent variable.

4. __E. coli does not grow well at low and

high temperatures __ is an inference about the temperature for E. coli bacterial growth.

5. A constant in the experiment is __ the

factors that stay the same __.

6. A student hung his laundry outside, during a 85°F day, on a clothes line. The type of weather that will dry the clothes the fastest is __Sunny__.

7. __ 30% __ of the Earth’s energy budget is reflected back into space?

8. The periodic table is arranged __by the

atomic number_______ 9. The direct transfer of heat from one object to

another through touching is called __conduction__.

10. The widening channel of a river where it

meets the sea, mixing fresh water and salt water is called an __estuary_____

11. Clouds form because water vapor

__condenses__.

BenchmarkMarch Name______________________________ 12. It is important to keep pollution out of the

nearest stream or river because __the pollution found in the local stream or river eventually flows into the ocean__.

13. The atomic number for iron is __26__.

14. The stream label number 1 carries sediment

into the wetland. __The wetland maintains water quality by filtering the sediment __ is the effect the wetland has on the water and sediment.

15. The asteroid belt lies between __Mars and

Jupiter__.

16. __Electrons__ orbit the nucleus of an atom.

17. Label the Chesapeake Bay. This is

answered for you.

18. A tributary of the Fredrick River is labeled number __1__.

19. The phases of the moon, eclipses, and tides

are caused by __the position of the Earth, moon, and Sun __.

BenchmarkMarch Name______________________________

20. A person poured oil into a creek at the

starred location on the Virginia map. The major body of water that would most likely be harmed is __Atlantic Ocean __.

21. __Jupiter __ is NOT an inner planet. 22. There are __8 __ planets in the solar system. 23. The time it takes a planet to make one

complete trip around the Sun is called its __period of revolution__.

24. Correctly label the atom. This is answered

for you. 25. Water is able to dissolve many substances,

and is commonly known as the __universal solvent__.

26. Two or more elements chemically combined

together to form

27. __OH__ is an example of a compound. 28. __ Water sinks when it freezes __ is NOT a

property of water. 29. The process of a gas changing into a liquid is

__condensation__. 30. The process of a water molecule changing

into a gaseous state is __evaporation__.