Family Traits, Thermal and Heat Energy, and Chemicals

Inherited Traits: Traits passed from parents to children, like eye color or height.
- Example: If both parents have brown eyes, their child might also have brown eyes.
Acquired Traits: Traits developed due to the environment or experiences.
- Example: Learning to ride a bicycle or getting a scar from a cut.

Definition: Energy that comes from heat.
- Example: When you heat water, it gets warmer because of thermal energy.
Sources: Sun, fire, and even your body.
- Example: The sun warms the earth with thermal energy.

Definition: A form of energy that makes things warm or hot.
- Example: Cooking food on a stove uses heat energy.
Transfer Methods:
- Conduction: Heat moves through solid objects.
  - Example: A metal spoon getting hot from a boiling pot.
- Convection: Heat moves through liquids and gases.
  - Example: Warm air rising and cool air sinking in a room.
- Radiation: Heat moves through space without touching anything.
  - Example: Feeling the warmth from the sun on your skin.

Definition: Substances with specific properties used in reactions.
- Example: Water (H₂O) is a chemical made of hydrogen and oxygen.
Uses: Cleaning, cooking, medicine, and more.
- Example: Using vinegar (a chemical) to clean surfaces.
Safety: Handle with care, some can be dangerous.
- Example: Always wear gloves and goggles when using strong chemicals.

Eye color is an example of an __________ trait.
- a) inherited
- b) acquired
- c) developed
- d) chosen
Riding a bicycle is an example of an __________ trait.
- a) inherited
- b) born
- c) acquired
- d) automatic
__________ traits are passed from parents to children.
- a) Inherited
- b) Learned
- c) Made-up
- d) Temporary

Thermal energy comes from __________.
- a) cold
- b) heat
- c) wind
- d) light
The __________ is a major source of thermal energy.
- a) moon
- b) sun
- c) earth
- d) star
When water is heated, it gets __________.
- a) cooler
- b) warm
- c) solid
- d) dry

Heat energy makes things __________.
- a) cold
- b) warm
- c) wet
- d) dry
Cooking food uses __________ energy.
- a) wind
- b) heat
- c) electric
- d) sound
A metal spoon gets hot in a boiling pot due to __________.
- a) radiation
- b) conduction
- c) convection
- d) insulation
Warm air rising and cool air sinking is an example of __________.
- a) radiation
- b) convection
- c) conduction
- d) reflection
Feeling the warmth from the sun is an example of __________.
- a) radiation
- b) conduction
- c) convection
- d) insulation

Water (H₂O) is a __________.
- a) gas
- b) solid
- c) chemical
- d) element
Vinegar is used in cleaning because it is a __________.
- a) tool
- b) chemical
- c) food
- d) liquid
Chemicals should be handled with __________.
- a) fun
- b) care
- c) gloves
- d) none
Wearing gloves and goggles is important when using __________ chemicals.
- a) soft
- b) strong
- c) mild
- d) light