Essential Facts: Science, Nature, and Calculations

Fundamental Knowledge Challenge

Earth Science & Geology

Formation of Smooth Stones

Which of these is the best explanation of how a smooth, round stone becomes smooth? It was in a stream for a long time.

Key Processes of the Water Cycle

Processes of the water cycle include: Evaporation, condensation, sublimation, and so on.

Formation of Water Droplets

The process by which water droplets form is: Condensation.

Astronomy & Physics

Defining Astronomical Bodies

Any astronomical body that revolves around a larger body is called a: Satellite.

Understanding Friction

Friction is the force that: Opposes motion between two surfaces.

Measuring Liquid Resistance to Flow

When scientists measure a liquid's resistance to flow, they are measuring its: Viscosity.

Biology & Botany

Observing Plant Growth

If you place bean seeds between moist paper towels and watch the stem and leaves appear, you will see a demonstration of: Germination.

Population Dynamics in Balanced Ecosystems

In a balanced ecosystem, which of the following would have the greatest population? Plankton.

Reproduction by Spawning

Which of the following reproduce by spawning? Fish.

Designing a Fertilizer Experiment

To test the effectiveness of a plant fertilizer, groups of plants are grown with different types of fertilizer. The control group should: Not be given any fertilizer.

Chemistry Fundamentals

Elements Without Neutrons

Which element does not contain any neutrons? Hydrogen.

Atoms in a Water Molecule

How many atoms are in a single molecule of water (H₂O)? 2.

Understanding Noble Gases

Argon and Neon are: Noble gases.

Mathematics & Problem Solving

Radar Tracking Calculation

A radar is designed to report the track of an aircraft every second. If it successfully reports 30 tracks in 60 seconds, what is the reporting efficiency? 50%.

Calculating Time Duration

Jerry walked a dog from 6:40 AM to 7:30 AM one day. How many minutes did he walk the dog? 50 minutes.

Office Area Calculation

A woman is looking for a bigger square office. She finds an office twice the area of her current one. The area of the new office is: 968 square feet.

Dog Pen Fencing Calculation

How many feet of chain fence are necessary to enclose a dog pen with a perimeter of 32 feet? 32 feet.

Train Speed and Travel Time

A train goes twice as fast downhill as it can go uphill. If it travels a certain distance uphill in 1/3 of an hour, and then the same distance downhill, what is the total journey time? ½ hour.

Pet Store Puppy Ratios

The pet store had six puppies selling for $105 each and twelve puppies selling for $130 each. What is the ratio of the number of puppies selling for $105 to those selling for $130? 1 to 2.

Box Dimensions and Perimeter

Jamie just bought two boxes. The first box is square with each side measuring 10 units. The second box is also square, with each side measuring 4 units. What is the perimeter of the second box? 16 units.

Probability of Drawing Marbles

There are 9 red and 6 green marbles in a bag. What is the probability of drawing a red marble, rounded to two decimal places? 0.60.

Rent Adjustment Calculation

Each August, a residential rent is adjusted to the cost of living index. If the original rent was $1,500 and the index increased by 7.15%, what is the new adjusted rent? $1,607.25.

Garden Perimeter and Area

The perimeter of a square garden is 84 feet. What is its area? 441 square feet.

Salmon Price Comparison

The price of salmon at a fish market is $5.40 per pound. This is 150% of its cost at a supermarket. What is the cost per pound at the supermarket? $3.60.

Printing Press Production Rates

A printing press will print 6,000 copies in 20 minutes. A second press can print 3,000 copies in the same amount of time. What is the printing capacity of the second press in 20 minutes? 3,000 copies.

Concrete Play Area Measurement

Before being painted, a concrete play area was marked. What is its area? 32 square feet.

City Population Growth

If the population of a certain city increased by 25% in two years, what is the new population as a percentage of the original population? 125%.