calculations, electro magnetic spectrum
If a car is constantly moving at 120km/h, and has to drive 40 km, how long will it take for the car to reach?
20 minutes
What is frequency?
The number of full wavelength that passes a point in a certain time.
What is used to measure weight?
weight scales
What is a food chain?
a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
name a habitat
Ocean, Arctic, Grassland, Rain forest, desert, Wetlands, Forests
If the frequency of a sound wave is 50hz and the wavelength is 2m, what is the speed?
100m/s
What is period?
The time required for one cycle to return to its starting point
What is used to measure mass?
Balances & Scales
What is a food web?
consists of all the food chains in a single ecosystem.
What is the coldest habitat?
the Arctic
What is the force of an object that weighs 40 kg on earth?
What is wavelength?
the distance between two consecutive points in a wave that are in phase, or have the same position in their respective cycles.
A man thinks that his weight will be heavier on mars. Is this true? Why?
His weight will decrease as Mars has lesser gravitational force.
What is the difference of a food chain and a food web?
A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem.
Which habitat has the largest amount of sunlight?
Tropical rainforest
what is the longest wavelength in the electromagnetic spectrum
radio waves
What is the line of equillabrum?
the center line of waves
A man is 70kg. What is his mass on the moon?
70kg
Name a producer
any plant
example: grass
What is the difference of a population and a community?
what is the shortest wavelength in the electromagnetic spectrum
How do you know the speed of a wave?
frequency multiplied by wavelength
What are the differences of mass and weight?
The mass of a body is the amount of matter in it, whereas the weight of a body is the measurement of gravitational force acting on it.
What is an apex predator?
An apex predator, also known as a top predator, is a predator at the top of a food chain, without natural predators of its own.
A habitat is the location where a group of one type of organism (a population ) lives, while a biome is a community made of all the habitats in a given region and climate.