Mass and weight
What tool do we use to measure weight?
A forcemeter
The algae at the beginning of the food chain are_________________
Producers
What are the four ways of weathering?
heat
ice
rain water
plant roots
What type of soil is the best for growing most of the plants?
Loam
What units do we use to measure mass? What units do we use to measure weight?
Mass is measured in kilograms (kg), and weight is measured in newtons (N).
Animals that hunt other animals to eat are________________________
Carnivores
How basalt is formed?
Outside the Earth's crust, cooling down slowly, so it has small crystals.
What does an arrow show in the food chain or food web diagram?
An arrow shows the direction of energy flow from one living thing to another.
If your weight on Earth is 300 newtons, what would happen to your weight on Jupiter, where gravity is stronger?
Your weight would increase because Jupiter’s gravity is stronger than Earth's.
What is most likely the next living thing in this food chain?
blackberries --> squirrel -->
Fox
How do you identify shale?
By scratching or breaking. If you leave a mark, that is shale.
What type of rocks are usually hard and beautiful and can be used in many ways?
Metamorphic rocks
What happens to an object’s mass when it is taken to a different planet?
The mass stays the same because it does not depend on gravity.
How are food webs and food chains different?
Food chains are simple.
Food webs contains many food chains.
How existing rocks change into metamorphic rocks?
By heat, by pressure, by both of them-heat+pressure
Why the last living thing in the food chain gets the least amount of energy?
Because energy is lost through the food chain.
How does gravity affect weight?
If gravity decreases, the object's weight also decreases.
Name some toxic substances that affect food chains and food webs.
Mercury
Cadmium
Pesticide
In the rock cycle process, how many changes igneous rocks under go?
1. melting-magma
2. weathering\erosion-sediments
3. heat,pressure-metamorphic
Harmful substances accumulate through the food chain. What does accumulate mean?
To increase in amount.