Body Systems
This body system includes the heart and blood vessels and moves blood around your body.
What is the circulatory system?
This plant tissue carries water and minerals from the roots to the rest of the plant.
What is xylem?
This force pushes objects upward when they are placed in a fluid like water.
What is buoyant force (buoyancy)?
This force pulls objects toward Earth and keeps airplanes from floating away into space.
What is gravity?
This is the name for the change from a solid to a liquid.
What is melting?
This body system helps you take in oxygen and remove carbon dioxide.
What is the respiratory system?
This plant tissue carries sugars made during photosynthesis to other parts of the plant.
What is phloem?
An object that floats has a buoyant force that is ______ than the force of gravity pulling it down.
What is greater than?
This force pushes an airplane forward through the air and is created by the engines.
What is thrust?
This part of a plant anchors it in the ground and absorbs water and minerals.
What are roots?
This body system breaks down food into nutrients your body can use for energy and growth.
What is the digestive system?
Xylem carries this important substance from the roots to the leaves.
What is water?
This is the reason a heavy ship made of metal can float, even though a metal coin sinks.
What is the ship’s shape allows it to displace enough water and have enough buoyant force?
This force acts against an airplane’s motion and slows it down as it moves through the air.
What is drag?
This natural resource provides energy from the Sun and helps plants grow.
What is sunlight (solar energy)?
This organ pumps blood throughout the body and is part of the circulatory system.
What is the heart?
Most photosynthesis happens in this part of the plant, where sugars are made.
What are the leaves?
When an object is placed in water, the amount of water it pushes out is called this.
What is displacement?
An airplane can fly when this force created by moving air over the wings is greater than the force of gravity pulling it down.
What is lift?
This term describes how well a material allows heat or electricity to pass through it.
What is conductivity?
A student eats a sandwich. Put these body systems in order as they help the body use the food: digestive system, circulatory system, and muscular system.
What is digestive system → circulatory system → muscular system? (Food is digested, nutrients enter the blood, and muscles use the nutrients for energy.)
A scientist cuts and damages the phloem in a plant, but the xylem still works. The plant can still get water to its leaves, but it will struggle to move this substance to other parts of the plant.
What are sugars (food/nutrients made during photosynthesis)?
Two objects have the same size and are placed in water. Object A floats, while Object B sinks. The main difference is that Object A is less ______ than water.
What is dense?
Explain how the four forces of flight work together to allow an airplane to stay in the air.
What are lift, weight (gravity), thrust, and drag? (Thrust moves the plane forward, lift pushes it upward, gravity pulls it downward, and drag slows it down.)
A student notices that a puddle disappears after sitting in the sun. Explain what happened to the water.
What is evaporation? (The liquid water changed into water vapour and moved into the air.)