Science

Question 1

Acidic Substances

Answer 1

fruits, vinegar, carbonated beverages,

Question 2

Base Substances

Answer 2

toothpaste, baking soda, cleaning powder, soap, ammonia

Question 3

The Color of the Star

Answer 3

describes the surface temperature of the star.

Question 4

Predation

Answer 4

relationship between two organisms of unlike species in which one of them acts as the predator that captures and feeds on the other organism that serves as the prey.

Question 5

Evolutionary Adaptation

Answer 5

increases survival rate of organisms with certain traits.

Question 6

Law of Conservation of Matter

Answer 6

matter cannot be created or destroyed in a chemical reaction.

the mass of the reactants consumed should be equal to the mass of the products.

Question 7

Natural Gas

Answer 7

fossil fuel that is mostly composed of methane.

Question 8

Solar Day

Answer 8

24/hours a day is dependent on Earth’s rotation on its axis

solar day is based on the length of time between two consecutive solar noons.

Question 9

Solar Noon

Answer 9

solar noon is the time the sun is at the highest point in the sky

Question 10

Producers

Answer 10

use energy from the sun to synthesize sugar through the process of photosynthesis.

Question 11

Chlorophyll

Answer 11

green pigment that absorbs sugar through the process of photosynthesis.

found in cyanobacteria and in chloroplasts of algae and plants.

Question 12

Primary Consumers

Answer 12

organisms that get transferred energy stored in sugar molecules.

feed on the producers.

Question 13

Balanced Chemical Equation

Answer 13

when the number of atoms of each element is the same on both the reactant and product sides of the equation.

Question 14

Seasonal Variations

Answer 14

occur because Earth’s rotational axis is tilted. During summer in the northern hemisphere, when the northern end of the axis is tilted towards the sun, regions in the northern hemisphere receive more direct sunlight.

Question 15

Humidity

Answer 15

amount of water vapor approaches the saturation point that the air can hold at a given temperature.

the rate of evaporation of water from skin decreases, causing the lack of evaporative cooling.

Question 16

Three solid balls of different material are dropped at the same time. Without air resistance, which will land first?

Answer 16

They will all land at the same time. Without air resistance, free falling objects will have the same downward acceleration, no matter the mass.

Question 17

Copernicus

Answer 17

proposed the first modern heliocentric theory that the sun, not the earth, is the center of the universe.

Question 18

Precipitation Forms

Answer 18

snow- growth of ice crystals from water vapor. crystals aggregate to form snowflakes

sleet/hail- form in the atmosphere from freezing water

freezing rain- rain that freezes upon contact with cold surfaces

Question 19

Bacterium

Answer 19

prokaryotic organisms that are unicellular

lack of nucleus and other membrane-bound organelles

reproduce through binary fission

type of asexual reproduction

Question 20

Deoxyribonucleic Acids

Answer 20

DNA

transmit genetic information

Question 21

Divergent Plate Boundary

Answer 21

occur when two tectonic plates are moving apart from each other

ex: mid-ocean ridge

Question 22

Cellular Respiration

Answer 22

takes place in the cytoplasm and mitochondria

energy is released by the breakdown of sugars and used to from ATP molecules

Question 23

ATP molecules

Answer 23

primary source of energy for many cellular processes

Question 24

Isotopes

Answer 24

have the same number of protons but different number of neutrons and mass number