2nd Grade
Sunlight, water, air, and soil
What do plants need to grow
to absorb water and hold the plant in the ground.
What is the job of roots in a plant?
A sequence that shows who eats whom in an ecosystem
What is a food chain?
When water vapor cools and changes back to liquid.
What is condensation?
A behavior or skill an organism develops from experience (e.g., riding a bike).
What is a learned skill?
Proton, neutron, electrons.
What are three main parts of an atom?
The eyes
Which part of the body helps you to see?
Water and wind
What are two things that can change the shape of land?
Metal
What is an example of a conductor of heat?
When an object blocks light.
How does a shadow form?
They move faster and spreads out.
What happens to the particles in a substance when it's heated?
Mass is not created nor destroyed in a chemical reaction.
Waht is the Law of Conservation of mass?
Aquatic animals
What do we call animals that live in water?
Solid, liquid, gas
What are the three states of matter?
Oxygen
What gas do huimans need to breathe?
It is less dense than water.
What is ice floating in water?
Touching a hot metal spoon.
Waht is an example of conduction?
A substance made of only one kind of atom.
What is an element?
The sun is a star. True or False.
What is true?
The heart
Which organ pumps blood thorough your body?
Gravity
Whai's the force that pulls objects toward the Earth?
When a liquid changes into a gas.
What is evaporation?
A trait passed from parents to offsprings.
What is an inherited trait?
The number of protons in an atom.
What does the atomic number tell?
food, air, water, and shelter.
What do animals need to survive?
The atmosphere
What do we call the layer of air around Earth?
A thermometer
What tool do we use to measure temperature?
It provides heat and caused evaporation.
Why is the sun important for the water cycle?
It gets hot due to heat conduction.
What happens to a metal spoon when placed on hot soup?
A change that forms a now substance, e.g., baking a cake.
what is a chemical change?