Unit 2 Lesson 6 Natural and human changes to ecosystems
Unit 2 Lesson 6 Natural and human changes to ecosystems
Unit 3 Lesson 1 Properties of Matter
Unit 3 Lesson 1 Properties of Matter
Unit 3 Lesson 2 Forms of energy
100
is a plant that people grow on farms
crop
100
trash in the environment
litter
100
the science of growing plants and animals on farms
agriculture
100
are things you can measure or describe. Examples mass, volume, size, shape, texture, color, conductivity, magnetism and state.
properties
100
is the energy that is stored in the chemicals in matter
chemical energy
200
soil has the nutrients plants need
fertile
200
are organisms that compete with humans for resources
pests
200
is any object or substance that has mass and volume
matter
200
these are forms that matter can take. Example solid, liquid or gas
states of matter
200
it includes coal, oil and natural gas. They formed from the remains of dead plants and animals.
fossil fuels
300
are chemicals that farmers use to help their crops grow
fertilizers
300
it is something that makes air, water, or soil harmful for living things.
pollution
300
it is the amount of matter in something. You can use a balance to measure this.
mass
300
when a liquid becomes a gas
evaporates
300
it is the energy something has because of where it is located
potential energy
400
A type of animal or plant that once lived on Earth, but no longer exists on Earth.
extinct
400
when people change raw foods in some way. Some of these changes help the food last longer. Other changes let people use the original food in different ways
process
400
it is how much space something takes up
volume
400
when a gas becomes a liquid
condenses
400
it is the energy that moving objects have
kinetic energy
500
are parts of plants or animals that people use to make cloth
fibers
500
the process in which farmers bring extra water to their farms
irrigation
500
it is a substance that carries electricity or heat
conductor
500
it is what makes things happen
energy
500
it is energy that moves from hot objects to cooler objects