Mixtures and Solutions
Describe what a mixture is.
a combination of two or more kinds of matter that retain their physical properties and can physically be separated
A girl riding a bicycle. What type of energy is this?
Mechanical Energy
What is a life cycle?
series of stages or changes a living thing goes through during its life.
What is a conductor?
a conductor allows electrical energy to flow through it
What is force?
a push or pull
Describe what a solution is.
a combination of two or more kinds of matter that do not retain their physical properties and forms new substances
A heat lamp is used in an iguana's cage. What types of energy is this?
Thermal and Electrical
What is the correct order of a RADISH's life cycle?
What is the correct order of a LIMA BEAN's life cycle?
Radish: seed --> germination --> seedling and root growth --> flowering stage --> seed production
Lima Bean: seed --> germination --> seedling and root growth --> flowering stage --> new fruit/seed development
What is an insulator?
an insulator stops/slows down energy from flowing through it
Ms. Zachary’s class designed an investigation in which they dropped a large acorn and a small acorn at the same time from the same height. Which force are they testing in this investigation?
Gravity, because it is a force that pulls objects toward each other
Fruit salad is an example of a
mixture
What produces the same type of energy as a girl blowing a whistle?
teacher will have to decide-- anything to do with sound energy
What is the correct order of a BEETLE's life cycle?
What is the correct order of a CRICKET's life cycle?
beetle: egg --> larva --> pupa --> adult
cricket: egg --> nymph --> adult
What supplies the energy for a circuit?
The battery
Give an example of BOTH a push and a pull.
walking, jumping on a pogo stick, open and close a door
(teacher will have to decide)
What is the difference between mixtures and solutions?
Mixtures are easier to separate than solutions.
A dad and his son are roasting marshmallows by the campfire. What type(s) of energy are they producing?
light and thermal, may also be sound (crackling of the wood)
How are the life cycles of plants and animals alike?
The offspring grow into adults
A metal screwdriver with a plastic handle, a light bulb, and an energy source have been connected to create a closed circuit. Explain why the bulb is not lit?
The plastic handle of the screwdriver is an insulator, so it does not conduct energy.
A brother and sister wanted to investigate how their roller blades would roll on different surfaces. They decided to skate on concrete, grass, and carpeted flooring. What force is being tested?
Friction
What is a combination of two or more substances?
Mixtures AND Solutions
A blender has a blade that spins to chop food into smaller pieces. Which types of energy is used by the blender?
mechanical, electrical, and sound
QUICKLY (YOU HAVE 3 MINUTES- NO NOTES)- teacher timer
Draw the life cycle of a beetle or cricket
Draw the life cycle of a radish or lima bean
beetle: egg --> larva --> pupa --> adult
cricket: egg --> nymph --> adult
Radish: seed --> germination --> seedling and root growth --> flowering stage --> seed production
Lima Bean: seed --> germination --> seedling and root growth --> flowering stage --> new fruit/seed development
A pan with boiling water is on a stove burner. A plastic ruler, a magnet, a pair of metal scissors and a wooden pencil have been placed inside a pan of boiling water. After one minute, Mrs. Smith touched each object to test its temperature.
plastic ruler and wooden pencil were cool to touch
metal scissors and magnet were hot to the touch
Which are conductors and which are insulators?
plastic ruler and wooden pencil - insulators
metal scissors and magnet - conductors
Josie was exploring friction by rolling a car down a ramp covered in carpet. She rolled the car down the ramp in three different trials, measuring how long it took the car to reach the bottom of the ramp each time. Why did Josie conduct three trials during the experiment?
To test more than one surface for friction