What is the purpose of the stem?
Provide the plant with support and carry minerals and water from roots
What do plants need to live?
Air, water, minerals, and sunlight
Why are leaves green?
Because of chlorophyll
What is the process called when living things create more of their own kind?
Reproduction
What is the main source of energy for Earth?
Sun
What type of animal is a frog?
amphibian
What type of rock forms when molten rock cools and hardens?
igneous
Which organ system transports oxygen and nutrients to body cells?
Circulatory system
What is the name of the energy that travels in waves and can be seen by our eyes?
Light energy
What term describes a plant or animal species that no longer exists anywhere on Earth?
Extinct
When light bends as it enters a different medium the process is known as what?
Refraction
Electric power is typically measured in what units?
Watts
Forces create what?
Motion
A push or pull is the definition of what?
Force
What kind of eclipse do we have when the moon is between the sun and the earth?
A solar eclipse
What is mass?
The amount of matter in an object
What is weight?
The force of gravity on an object
What 2 things cause erosion?
Wind or water
Why is it easier to slide your feet across ice than gravel?
Less friction
Which phase of matter will change shape but not size?
Liquid
What is connected to your bones to help them move?
Muscles
How many bones does an adult human have?
206
What is the human body's largest organ?
The skin
Which of the following organs is also a muscle?
The heart
Landforms are found on what layer of the Earth?
Crust