Direction: Encircle the letter of the correct answer.
1. Which of the following statements best describe a homogeneous mixture?
a. the components of the mixture are still recognizable.
b. the substance are uniformly mixed.
c. more than one phase is observed.
2. All of the following mixture are examples of heterogeneous mixtures except_____.
a. iron filings in sand
b. sugar solution
c. fruit salad
3.the pigment of the skin is called_____.
a. chlorophyll
b. keratin
c. melanin
4. what are the receiving chambers of the heart?
a. atria
b.superior vena cava
c. ventricles
5. crabs and crawfish are__.
a. arachnids
b. crustaceans
c. rodents
6. if we throw a ball upwards it will come home to the ground by a force called____.
a. friction
b.gravity
c.magnetic
7.when do you know the transfer of heat (thermal energy) has ended?
a. when both object reach the same temperature
b. when you can measure the amount of heat
c. when the substance that is receiving the heat raaches the boiling point
8. why does Philippines have a tropical climate?
a. latitude
b. altitude
c. wind belt
d.bodies of water
9. what imaginary line divides the Earth from the equator to the North Pole or south Pole?
a. latitude
b.longitude
c.prime meridian
d. equator
10. whichof the following support the statement? the Earth rotates on its axis.
a. variation in the atmospheric density
b. changes in the position of sunspots in the sun
c. changes in the constellations throughout the year
d.the apartment movement of the sun throughout the day​