Cells & Microorganisms
Which organelle in a plant cell makes them green?
chloroplast
Is burning paper a physical or chemical change?
chemical change
_____ charges attract and _____ charges repel.
Opposite charges attract and same charges repel.
Name three landforms.
Answers will vary.
What is the difference between a vertebrate and an invertebrate?
A vertebrate has a backbone. An invertebrate does not have a backbone.
What two organelles do plant cells have that animal cells do not have?
chloroplast and cell wall
Is burning a candle a physical or chemical change?
It is both a physical and chemical change
If the negative pole of a magnet is put next to the negative pole of another magnet, what will happen?
The magnets will repel
1. Define constructive force.
2. Define destructive force.
Constructive forces build up or create landforms.
Destructive forces destroy landforms.
Name the three types of vertebrates.
Fish, birds, mammals, reptiles, amphibians
List three organelles that both plant and animal cells have.
Cell membrane, nucleus, cytoplasm
Give three different examples of a physical change.
Answers will vary.
Cutting paper, slicing a sandwich, melting ice
What is the name of a temporay magnet that can be turned on and off?
Electromagnet
Give an example of a constructive force and give an example of a destructive force.
Answers will vary
Give three examples of invertebrates.
Answers will vary.
Crab, insects, squid
List three benefits of microbes. Be as specific as possible.
Microbes create yogurt.
Microbes create cheese.
Microbes create pills and medicine.
(answers will vary)
What are the signs of a chemical change? Name four.
Change in ordor, change in temperature without heat being added, gas or bubble created, change in texture
Define a closed cirucit. Define an open circuit.
Closed circuit - a complete pathway for electricity to flow through
Open circuit - an incomplete pathway that does not allow electricity to flow through
Define weathering, erosion, and deposition.
Weathering - the breaking down of rock into sediments
Erosion - the movement of sediment
Deposition - the movement and depositing of sediments in a new place
How are plants classified? Name the two categories.
Flowering and nonflowering, seed producing and non-seed producing
Give the FUNCTION of the nucleus, cytoplasm, and cell membrane.
Nucleus - controls the activities of the cell
Cytoplasm - Prevents the organelles from bumping into one another
Cell membrane - Keeps the bad things out of the cell and keeps the good things in the cell
What are the signs of a physical change? Name three
Change in size, change in state of matter, change in shape
Conductors - iron, paper clip, steel
Insulators - plastic, paper, rubber
Explain how volcanoes are BOTH destructive and constructive.
Volcanoes are destructive because the lava can destroy vegetation. Volcanoes are constructive because once the lava hardens, it become igneous rock and eventually, a mountain can form.
List four characterisitcs of reptiles.
1. Lays eggs
2. Scaly skin
3. Lives on land
4. Cold-blooded