Physical Science EOCT Practice Part I

1. Physical Science EOCT PracticePart I Milton High School

2. The diagram shows different types of electromagnetic waves and their relative frequencies and wavelengths. Which of the following conclusions is supported by the illustration? There is no relationship between frequency and wavelength. As wavelength decreases, frequency remains the same. As wavelength decreases, frequency decreases. As wavelength decreases, frequency increases.

3. The diagram shows different types of electromagnetic waves and their relative frequencies and wavelengths. Which of the following conclusions is supported by the illustration? There is no relationship between frequency and wavelength. As wavelength decreases, frequency remains the same. As wavelength decreases, frequency decreases. As wavelength decreases, frequency increases.

4. Gabriel looks at a fish tank from the side. Gabriel then looks down into the fish tank from above and observes that the position of the plants in the water looks different. Which type of wave behavior causes the apparent change in the position of the plants? Interference Absorption Refraction Reflection

5. Gabriel looks at a fish tank from the side. Gabriel then looks down into the fish tank from above and observes that the position of the plants in the water looks different. Which type of wave behavior causes the apparent change in the position of the plants? Interference Absorption Refraction Reflection

6. Mr. Lanham is in a space shuttle which is orbiting Earth at a speed of 27,200 miles per hour. A long arm lifts a satellite out of the cargo bay and gently releases the satellite next to the shuttle . According to Newton’s first law of motion, what should be the relative speed of the satellite after five minutes? The same speed as the shuttle Slower than the shuttle Faster than the shuttle The same as Earth’s rotation

7. Mr. Lanham is in a space shuttle orbiting Earth at a speed of 27,200 miles per hour. A long arm lifts a satellite out of the cargo bay and gently releases the satellite next to the shuttle . According to Newton’s first law of motion, what should be the relative speed of the satellite after five minutes? The same speed as the shuttle Slower than the shuttle Faster than the shuttle The same as Earth’s rotation

8. When copper reacts with oxygen in the air, a color change takes place, and the metal changes color from reddish brown to green. What type of change occurs to produce this color change? Dissolving Conductivity Physical change Chemical change

9. When copper reacts with oxygen in the air, a color change takes place, and the metal changes color from reddish brown to green. What type of change occurs to produce this color change? Dissolving Conductivity Physical change Chemical change

10. The illustration shows the box from the Periodic Table that represents the element beryllium (Be). Based on the information provided, how many neutrons do most beryllium atoms contain in their nuclei? 2 4 5 9

11. The illustration shows the box from the Periodic Table that represents the element beryllium (Be). Based on the information provided, how many neutrons do most beryllium atoms contain in their nuclei? 2 4 5 9

12. Scandium is an element that normally has 23 neutrons in its nucleus. The atomic number of scandium is 21. How many electrons would you expect an atom of scandium to have? 2 21 23 44

13. Scandium is an element that normally has 23 neutrons in its nucleus. The atomic number of scandium is 21. How many electrons would you expect an atom of scandium to have? 2 21 23 44

14. Why do atoms of elements have neutral charges? All atoms contain neutrons which have no charge. The number of protons and the number of neutrons are equal. The number of protons and the number of electrons are equal. The number of neutrons and the number of electrons are equal.

15. Why do atoms of elements have neutral charges? All atoms contain neutrons which have no charge. The number of protons and the number of neutrons are equal. The number of protons and the number of electrons are equal. The number of neutrons and the number of electrons are equal.

16. Which of the following properties of atoms can be used to identify an atom? Its number of valence electrons Its number of protons Its number of neutrons Its combined number of protons and neutrons

17. Which of the following properties of atoms can be used to identify an atom? Its number of valence electrons Its number of protons Its number of neutrons Its combined number of protons and neutrons

18. The molecules in a sample of matter move independently of one another. The substance takes the shape of its container. When the substance is moved from one container to another, its shape changes, but its volume remains the same. What type of substance is described? Plasma Gas Liquid Solid

19. The molecules in a sample of matter move independently of one another. The substance takes the shape of its container. When the substance is moved from one container to another, its shape changes, but its volume remains the same. What type of substance is described? Plasma Gas Liquid Solid

20. Which property of matter is determined by measuring the pull of gravity on a sample of matter? Weight Mass Volume Acceleration

21. Which property of matter is determined by measuring the pull of gravity on a sample of matter? Weight Mass Volume Acceleration

22. Which of the following devices transforms electrical energy into mechanical energy? Light-bulb Electric motor Generator Wind turbine

23. Which of the following devices transforms electrical energy into mechanical energy? Light-bulb Electric motor Generator Wind turbine

24. In which of the following media would you expect sound waves not to travel? Solid Liquid Gas Vacuum

25. In which of the following media would you expect sound waves not to travel? Solid Liquid Gas Vacuum

26. Which of the following subatomic particles contributes significantly to the mass of an atom but does not contribute to its electrical charge? Proton Quarks Electron Neutron

27. Which of the following subatomic particles contributes significantly to the mass of an atom but does not contribute to its electrical charge? Proton Quarks Electron Neutron

28. Salt dissolves in water forming a solution. What could be done to speed up the rate at which salt dissolves? Heat the water Remove the ions Do not stir the solution Put in a larger piece of salt

29. Salt dissolves in water forming a solution. What could be done to speed up the rate at which salt dissolves? Heat the water Remove the ions Do not stir the solution Put in a larger piece of salt

30. Which of the following examples is an example of a physical change? Burning of methane gas produces water and carbon dioxide Vinegar and baking soda combining to form a salt and water Condensation of water vapor on the outside of a cold can of soda Formation of silver sulfide when silver reacts with sulfur in the air

31. Which of the following examples is an example of a physical change? Burning of methane gas produces water and carbon dioxide Vinegar and baking soda combining to form a salt and water Condensation of water vapor on the outside of a cold can of soda Formation of silver sulfide when silver reacts with sulfur in the air

32. Mr. Sylvestri is preparing soup for dinner. He uses a large metal pot to cook the soup. The pot has two metal handles. Mr. Sylvestri is about to lift the pot with both of his hands when he remembers to use the pot holders to protect his hands. What is he protecting himself from? Heat transfer by radiation Heat transfer by convection Heat transfer by conduction Heat transfer by evaporation

33. Mr. Sylvestri is preparing soup for dinner. He uses a large metal pot to cook the soup. The pot has two metal handles. Mr. Sylvestri is about to lift the pot with both of his hands when he remembers to use the pot holders to protect his hands. What is he protecting himself from? Heat transfer by radiation Heat transfer by convection Heat transfer by conduction Heat transfer by evaporation

34. What interaction will occur when two out of phase light waves meet and merge into a single light wave? Refraction Reflection Constructive interference Destructive interference

35. What interaction will occur when two out of phase light waves meet and merge into a single light wave? Refraction Reflection Constructive interference Destructive interference

36. An electromagnet becomes stronger when Its iron core is made thicker The number of coils of wire around its core are increased An aluminum nail is used instead of an iron nail A higher resistance wire material is used

37. An electromagnet becomes stronger when Its iron core is made thicker The number of coils of wire around its core are increased An aluminum nail is used instead of an iron nail A higher resistance wire material is used

38. Buffy studied the flow of water through different types of soil. She set up identical volumes of different types of soil in each of five different beakers. One by one, she poured 500mL of water into the samples and measured the time for the water to drain through the samples. In this investigation, what is the dependent variable? The number of samples she used The amount of water she poured The type of soil selected The drainage time

39. Buffy studied the flow of water through different types of soil. She set up identical volumes of different types of soil in each of five different beakers. One by one, she poured 500mL of water into the samples and measured the time for the water to drain through the samples. In this investigation, what is the dependent variable? The number of samples she used The amount of water she poured The type of soil selected The drainage time

40. Brad investigated whether sea salt raises the boiling point of water. He put 3 liters of water at 20oC and 1.5 cups of sea salt in a pot, heated the solution over flame, and measured the temperature when the water reached a rolling boil. He repeated the experiment three times and recorded the same result each time. He concluded the sea salt raises the boiling point of water by 5oC. Where did Brad err in his experiment? He did not boil a pot of water without sea salt He did not conduct the trials at the same time He waited until the water reached a rolling boil He should have repeated the measurement several more times

41. Brad investigated whether sea salt raises the boiling point of water. He put 3 liters of water at 20oC and 1.5 cups of sea salt in a pot, heated the solution over flame, and measured the temperature when the water reached a rolling boil. He repeated the experiment three times and recorded the same result each time. He concluded the sea salt raises the boiling point of water by 5oC. Where did Brad err in his experiment? He did not boil a pot of water without sea salt He did not conduct the trials at the same time He waited until the water reached a rolling boil He should have repeated the measurement several more times

42. The density of aluminum is 2.70 g/cm3. A piece of aluminum foil has a volume of 54.0 cm3. What is the mass of this piece of aluminum foil? 146 g 20.0 g 14.6 g 0.050 g

43. The density of aluminum is 2.70 g/cm3. A piece of aluminum foil has a volume of 54.0 cm3. What is the mass of this piece of aluminum foil? 146 g 20.0 g 14.6 g 0.050 g

44. What is the coefficient on Al2O3 when the equation describing the following synthesis reaction is balanced? Al + O2 Al2O3 1 2 3 6

45. What is the coefficient on Al2O3 when the equation describing the following synthesis reaction is balanced? Al + O2 Al2O3 1 2 3 6