Cool round
1. According to the case study, what makes a water molecule (H₂O) polar?
A) It is made of two hydrogen atoms and one oxygen atom.
B) One side is slightly negative and the other is slightly positive.
C) It can exist as a solid, liquid, and gas.
D) It is the "Universal Solvent."
B) One side is slightly negative and the other is slightly positive.
2. What is the name of the bond that makes water molecules stick to each other like tiny magnets?
A) Oxygen Bond
B) Polar Bond
C) Hydrogen Bond
D) Crystal Bond
C) Hydrogen Bond
3. Why does ice float on liquid water?
A) Ice is warmer than liquid water.
B) Ice is made of a different type of water molecule.
C) The hydrogen bonds lock water molecules into a six-sided crystal pattern with empty gaps, making it less dense.
D) Ice is a gas trapped in a solid form.
C) The hydrogen bonds lock water molecules into a six-sided crystal pattern with empty gaps, making it less dense.
4. What would happen to fish in a pond if ice sank instead of floated?
A) They would have more space to swim.
B) They would freeze from the bottom up and die.
C) They would be able to breathe more easily.
D) They would turn into water vapor.
B) They would freeze from the bottom up and die.
5. Why is water called the "Universal Solvent"?
A) Its polar nature pulls apart dirt and germs.
B) It can dissolve everything in the universe.
C) It is the only liquid on Earth.
D) It can only dissolve things that are also polar.
A) Its polar nature pulls apart dirt and germs.
6. Approximately what percentage of the human body is water?
A) 30%
B) 45%
C) 90%
D) 60%
D) 60%
7. At what temperature does water become an invisible gas called water vapor?
A) 0°C (32°F)
B) 50°C (122°F)
C) 100°C (212°F)
D) 212°C (413°F)
C) 100°C (212°F)
8. What is the process called when water turns from a liquid to a gas?
A) Condensation
B) Precipitation
C) Collection
D) Evaporation
D) Evaporation
9. According to the text, water can evaporate at room temperature. What is a result of this?
A) Ponds dry up on hot days.
B) Clouds form immediately.
C) Ice forms on the surface of water.
D) The water cycle stops.
A) Ponds dry up on hot days.
10. What happens to water vapor high in the sky when it cools down?
A) It evaporates.
B) It condenses into clouds.
C) It falls as hail immediately.
D) It becomes a solid crystal.
B) It condenses into clouds.
11. Which of the following is NOT a form of precipitation mentioned in the case study?
A) Rain
B) Snow
C) Hail
D) Fog
D) Fog
12. What is the correct order of the Water Cycle as described in the text?
A) Collection → Evaporation → Condensation → Precipitation
B) Evaporation → Condensation → Precipitation → Collection
C) Precipitation → Collection → Evaporation → Condensation
D) Condensation → Precipitation → Collection → Evaporation
B) Evaporation → Condensation → Precipitation → Collection
13. The water you drink today is the same water that dinosaurs drank. What does this tell us about Earth's water?
A) Water is a limited resource that is easily destroyed.
B) Water is constantly being created new.
C) Earth has been recycling water forever.
D) Dinosaurs lived very recently.
C) Earth has been recycling water forever.
14. In which state of matter are water molecules "far apart" and "zoom at high speed"?
A) Solid
B) Liquid
C) Gas
D) Crystal
C) Gas
15. According to the summary table, how do molecules move in a solid (like ice)?
A) They slide past each other.
B) They zoom at high speed.
C) They vibrate in place.
D) They do not move at all.
C) They vibrate in place.
16. What makes water "perfect for drinking and cleaning"?
A) Its color and taste.
B) Its ability to freeze at 0°C.
C) Its polar nature, which allows it to pull apart dirt and germs.
D) Its ability to become a gas at 100°C.
C) Its polar nature, which allows it to pull apart dirt and germs.
17. Which of the following is NOT a function of water in the human body, as mentioned in the text?
A) Carrying nutrients
B) Removing waste
C) Keeping the brain working
D) Producing oxygen for breathing
D) Producing oxygen for breathing
18. What state of matter is "drinking water" an example of?
A) Solid
B) Liquid
C) Gas
D) Plasma
B) Liquid
19. The gaps in the six-sided crystal pattern of ice are the reason why:
A) ice is denser than liquid water.
B) ice is less dense than liquid water.
C) ice is a good solvent.
D) ice melts at 100°C.
B) ice is less dense than liquid water.
20. The case study states that water is "never destroyed, just changed!" What does this refer to?
A) The creation of new water molecules.
B) The process of the Water Cycle.
C) The breaking of hydrogen bonds.
D) The fact that water is a universal solvent.
B) The process of the Water Cycle.
What is favorite color of Ms. Lara?
a) Black and Red
b) may be Black and red
c) It could be Black and red
d) None of above
a) Black
During rain we feel cold or hot?
a) Yes
b) No
a) Yes
who is best friend of Bella, Micky and Eric?
a) I do not know
b) Mirenda-Kevin-Ethan
c) Ms. Lara
d) No one
b) Mirenda-Kevin-Ethan
Water structure looks like which cartoon character?
a) Pooh and wennie
b) donald duck
c) tom and jerry
d) Micky mouse
d) Micky mouse
Water is very old _______that we drink today.
a) billion of years
b) 10 decades
c) million of year
d) none of above
a) billion of years