MULTIPLE CHOICEInstructions: Read and answer the question below. Encircle the letter of the correct answer.1. When you were able to observe the sweet smell of ripe fruit from dining table, you are aware that a process has occurred. What do you call this natural process?a. Absorptionb. Assimilationc. Diffusiond. Digestion2. Molecules constantly move from one place to place. In which of the following is the movement of the molecules fastest?The molecules of _________a. gasesb. liquidsc. solids d. none of the above3. A mixture that has the same appearance and composition throughout? a. Colloidalb. Heterogeneous c. Homogenousd. Tonic4. At the right is a diagram of a molecule of water as seen under the electron microscope. What makes up a molecule of water?a. An atom of hydrogen and three atomsoxygen.b. An atom of oxygen and two atoms of hydrogenc. An atom of hydrogen and three atomsoxygen.d. Three atoms of hydrogen and two atoms of oxygen.5. Which of the following is an example of a heterogeneous mixture?a. Halo - halob. Metal alloy c. Sea waterd. Vinegar6. Which of the following shows physicalchange?A. Boiling an eggB. Burning of woodC. Boiling of waterD. All of the above7. Mixing 20 grams of sugar and 50 ml of water results a volume of less than 70 ml. What explains this result?8. In the three phases of matter, which has the strongest force of attraction?9. When liquid turns into solid, which of following occurs?10. Which of the following is not a mixture?Ans:1. C2. A3. C4. B5. A6. B7. C8. D9. C10. A

ACTIVITY 3: Knowledge Check!Directions: List at least 5 importance of gravity in our daily lives1______2______3______4______5______​

14. About how long ago was Earth formedA. 4.5 million yearsC. 45 million yearsB. 4.5 billion yearsD. None of the above15. Oceanic crust isanddense than continental crust.A. wider, lessB. thinner, moreC. thinner, lessD. wider, more16. Wind, solar and water are examples of resourcesA. nonrenewableC. fossil fuelsB. buddingD. renewable17. Which cycle illustrates the path of water through the environment?A Nitrogen cycleC. Carbon cycleB. Phosphorus cycleD. Hydrologic cycle18. What is a resource that can be replaced relatively quickly by naturalprocesses?A. nonrenewableC. depleted resourcesB. material resourcesD.renewable resource19. Environmental Scientists study interactions between_A. animals and their environment.B. humans and their environments.C. humans and animals.D. animals and their habitats20. Which of the following is the most abundant element in a Star?A. HeliumC. SulphurB. CarbonD. Hydrogen21. Which of the following is described as a cloud of gas and dust?A. Proto starC. Black HoleB. NebulaD. Red Giant22. What will be the next fate of a red giant after it explodes?A. It will become a planetary nebula.B. It will become a Black Hole.C. It will go back as a proto star.D. It will remain the same.23. What do you call to the explosion of a red supergiant star?A Black HoleC. SupernovaB. Planetary NebulaD. White dwarf24. This stage of a star exerts such a string gravitational pull that no lightescapes called as alanA Neutron StarC. Black DwarfB. ProtostarD. Black Hole25. It is the earliest stage of a star's life.A. Neutron StarC. Black DwarfB. ProtostarD. Black Hole​

9. Which of the following has factors (x+2)(x-2) = (x-4)?A. X3 + 4x2 - 4x + 16 =0C. X3 - x2-+16 = 03.x3 - 4x2 - X - 16 =0D. X3 - 4x2 - 4x + 16 = 010. Which of the following cubic polynomials has roots -2 and 2?A. 2x3 + 3x28x - 12 = 03. 2x3 +-3x2 + 8x - 12 = 0C. 2x3 +3x2 + 8x 12 = 0D. 2x3 - 3x2 - 8x - 12 = 011. Which of the following is the factor of x2 - 6x 16?A. (x - 8)(x - 2)C. (x-8)(x + 2)B. (x + 8)(x + 2)D. (x + 8)(x - 2)12. Which of the following has the factor of (x + 8 - 6)?A. x2 + 2x - 48C. x2 + 14x - 48B. x2 - 2x +- 48D. x2 - 14x - 4813. Which of the following has the factor of 3xy(x-7)(x - 1)?A. -3x3y - 18x2y - 21xyC.3x3y + 18x2y - 21xyB. 3x3y + 18x2y + 21xyD. 3x3y - 18x2y - 21xy14. What is the other factor of x2 + 10x + 16 when one of its factors is x + 8?c.x- 8B.x42D. X +8A.X- 2x2 - 6x? ?15. Which of the following is NOT a factor of 2x3D.x-c.xt1B. x - 3A. 2x​

isaayos ang salitang ito MHIARAPHIG​