A
Which of the following is NOT a way pathogens spread?
Which disease is commonly spread through contaminated water?
Why is sodium chloride the dominant salt in ocean water?
Which factor does not affect the frictional force between two surfaces?
What is the normal force acting on a 10 kg object resting on a horizontal surface (ignore other forces)?
What environmental factor is necessary for oxidation to occur?
A) Water
B) Carbon dioxide
C) Low temperatures
D) Absence of air
A) Water
Why are volcanoes important for Earth’s crust?
B) They release pressure and create new land
Which tissue contains cells that detect stimuli such as touch and temperature?
a) Epithelial tissue
b) Connective tissue
c) Nervous tissue
d) Muscle tissue
a) Epithelial tissue
How do longitude and latitude work together to identify specific locations on Earth?
a) Latitude lines measure distances north and south of the Prime Meridian, while longitude lines measure distances east and west of the equator.
b) Latitude measures the distance from the equator, while longitude measures the distance from the Prime Meridian, allowing for precise location identification.
c) Longitude helps to determine geographical features, while latitude is used only for navigation purposes.
b) Latitude measures the distance from the equator, while longitude measures the distance from the Prime Meridian, allowing for precise location identification.
The term "isotope" refers to atoms with the same number of:
B) Protons but different neutrons
Which part of the nervous system is composed of the brain and spinal cord?
Which blood cells are responsible for fighting infections?
Radioactive decay results in the formation of:
A) New isotopes
These types of rocks form from the cooling and solidification of molten material, either beneath the Earth's surface or after a volcanic eruption. They are typically hard and durable, with a crystalline structure, and can range from being glassy to coarse-grained. Some are light-colored and rich in silica, while others are darker and contain more iron and magnesium. Examples include granite and basalt. What type of rocks are these?
a) Sedimentary rocks
b) Metamorphic rocks
c) Igneous rocks
d) Fossiliferous rocks
c) Igneous rocks
Fungi decompose dead organic matter and recycle nutrients into the ecosystem. What would be the ecological consequence if fungi were absent from an ecosystem?
a) Nutrient cycling would accelerate, benefiting plant growth
b) Dead organic matter would accumulate, slowing down nutrient recycling
c) Photosynthesis would stop due to a lack of oxygen
d) Animals would no longer have a source of food
b) Dead organic matter would accumulate, slowing down nutrient recycling
Which nutrient should be moderated according to dietary guidelines to reduce the risk of chronic diseases?
Which isotopic dating method is effective for rocks millions of years old?
B) Uranium-lead dating
Which of the following is the most critical challenge in adopting nuclear energy as a clean energy source?
A) High operational costs of nuclear power plants compared to fossil fuel plants.
B) Lack of sufficient uranium reserves to meet global energy demands.
C) Management of radioactive waste that remains hazardous for thousands of years.
D) Inability to generate enough energy for large-scale electricity production.
C) Management of radioactive waste that remains hazardous for thousands of years.
A biologist discovers a fossilized bone that still contains 12.5% of its original Carbon-14. The half-life of Carbon-14 is 5,700 years.
How old is the fossil?
Which climate promotes chemical weathering due to high temperatures and rainfall?
A) Desert climate
B) Arctic climate
C) Tropical climate
D) Mountain climate
C) Tropical climate
If a box is on an inclined plane, how does the normal force compare to the box's weight?