Matter
What are the 3 States of Matter?
Solid, Liquid, Gas
Tell whether this is a chemical or physical change.
- A wooden log burning in a fire.
Which of the following is NOT a common impact of invasive species on an ecosystem?
A. They may compete with native species for food
B. They may have no natural predators in the new environment
C. They always improve biodiversity in the ecosystem
D. They may consume resources needed by native species
C. They always improve biodiversity in the ecosystem
Which answer below is an example of a predator in an ecosystem.
leaf
bird
beetle
sunshine
bird
Which of these reservoirs contains the most freshwater?
lakes
rivers
glaciers
groundwater
glaciers
Identify the properties of a solid, liquid, and gas. Give an example of water in each state of matter.
Solid:
Liquid:
Gas:
Solid- has a definite shape AND volume; ice
Liquid- has a definite volume, but NO definite shape; water
Gas- has NO definite volume OR shape; steam or water vapor
Powdered sugar dissolves in water.
A solid candy bar melts into a liquid.
Paper catches on fire and turns to ash.
Several metals mixed together form an alloy.
Which numbers from the list describe a solution?
1 and 4
2 and 3
3 and 4
1, 2, and 4
1. 1 and 4
What is an invasive species?
A. A species that is endangered and needs protection
B. A newly introduced species that can damage the balance of an ecosystem
C. A species that naturally belongs in an ecosystem
D. A species that helps maintain ecosystem balance
B. A newly introduced species that can damage the balance of an ecosystem
Is dirt a Renewable or Nonrenewable resource?
Nonrenewable
Students are studying the star in our solar system. They wrote down things they thought were true about the star.
1. The sun is the largest star in the universe.
2. Our star is the brightest in the universe.
3. The sun is brightest during the summer because it is closer.
4. Our star looks brighter than other stars because it is closer.
Which sentence(s) describe our star?
A. 1 only
B. 4 only
C. 2 and 3 only
D. 3 and 4 only
B. 4 only
Water particles can be close together or far apart. In which of these examples are the water particles farthest apart?
steam in a bathroom after a hot shower
a glass of water sitting on the table
a bucket of warm water
ice cubes in a freezer
steam in a bathroom after a hot shower
A glass is filled half full of water and half full of ice. The mass of the ice and water is 250 milligrams. Which sentence describes the mass of the ice and water when the ice melts in the glass?
It will be 250 milligrams.
It will be a little less than 250 milligrams.
It will be twice as much as 250 milligrams.
It will be a little more than 250 milligrams.
It will be 250 milligrams.
How do invasive species typically enter new ecosystems?
A. They evolve naturally within the ecosystem
B. They are deliberately introduced by scientists for research
C. They are often accidentally transported by human activities
D. They migrate naturally during normal seasonal changes
C. They are often accidentally transported by human activities
Jenna is studying how matter changes during reactions. She wants to compare the mass of her materials before and after the reaction. Which tool should she use?
ruler
beaker
digital scale
thermometer
digital scale
The list shows the distance of some stars from Earth.
· Star A: 9.4 light-years
· Star B: 4.2 light-years
· Star C: 11.2 light-years
· Star D: 0.000016 light-years
· Star E: 6.0 light-years
How bright do these stars look to people on Earth?
Choose the answer below that shows the correct order from 1 to 5 with the least bright star as 1 and the brightest star as 5.
Star C, Star A, Star E, Star B, Star D
Star C, Star D, Star E, Star A, Star B
Star E, Star A, Star B, Star C, Star D
Star E, Star C. Star D, Star B, Star A
Star C, Star A, Star E, Star B, Star D
James blows up a balloon as a demonstration in his class, then squeezes the balloon, but does not pop it.
Which sentence explains what James is trying to show the class?
Air has no weight, which will cause the balloon to float.
Air is made of very large particles that are invisible.
Air is not made of matter and will have no effect on the balloon.
Air is made of particles that are very small and cannot be seen.
4. Air is made of particles that are very small and cannot be seen.
When substances are mixed, changes can occur, and sometimes new materials are formed.
What is the result when unpainted metal and water are mixed?
rust forms
gas forms and is released
the solid dissolves in the liquid
the liquids separate into layers
rust forms
An invasive species of water plant is damaging the ecosystem of a nearby lake. Scientists need a solution that will control the growth of the plant without further damaging the ecosystem. Which solution can scientists use that would reduce or remove any negative impact on the ecosystem?
A. Add chemicals to the water that kill plants.
B. Dig up the invasive water plants in the lake with a bulldozer.
C. Add an insect to the ecosystem that feeds only on the invasive plant species.
D. Raise the water temperature high enough to kill off the invasive species of plant.
C. Add an insect to the ecosystem that feeds only on the invasive plant species.
What are ALL living things made of?
Skin and bones
Water
Dense nutrients
Cells
Cells
During the winter there are (1)_____________ hours of sunlight. The number of hours of sunlight decreases from (2)____________ to December
Which choices below are the correct words that go in the blanks.
(1) more, (2) September
(1) fewer, (2) June
(1) fewer, (2) September
(1) more, (2) June
(1) fewer, (2) September
Which is true about a gas?
A. It takes up a definite amount of space.
B. It does not take up a definite amount of space and does not have a definite shape.
C. It takes up a definite amount of space, but does not have a definite shape.
D. It has a definite shape.
B. It does not take up a definite amount of space and does not have a definite shape.
When a candle wick burns, the wax around the wick melts and appears to become smaller in size. Which statement is true?
A. All the changes taking place are physical changes
B. All the changes taking place are chemical changes
C. The weight of the matter is greater than before it is burned.
D. The weight of the matter is the same before and after it is burned.
D. The weight of the matter is the same before and after it is burned.
A river runs through Capital City. The mayor is worried about the fish in the river.
1. Pollution is hurting the fish that are natural to the area, native fish.
2. Another type of fish not normally found in Capital City is present, non-native fish.
3. The non-native fish are eating most of the native fish food.
Select all answers of the actions that will help native fish.
A. Remove the non-native fish.
B. Make more parks by the river.
C. Offer recycling of household chemicals.
D. Keep industries from putting chemicals into the river.
A. Remove the non-native fish.
C. Offer recycling of household chemicals.
D. Keep industries from putting chemicals into the river.
A scientist is studying the question, “What impact does using solar energy instead of burning coal have on the amount of car pollution in the air?” Which evidence would the scientist need to help answer the question?
A. what uses there are for cars
B. a list of chemicals the sun and coal contain
C. how much pollution solar panels release into the air compared to burning fossil fuel
D. the names of other greenhouse gases that burning fossil fuels and solar panels release into the air
C. how much pollution solar panels release into the air compared to burning fossil fuel
Rotation is ______________________________ and it takes _______________ to complete one.
Revolution is _______________________________ and it takes _______________________ to complete one.
Rotations cause _________________.
Revolutions cause _______________.
-The Earth spinning on its Axis; 24 hours or 1 day.
-The Earth travelling around the Sun; 365 days or 1 year.
-Day and Night
-Seasons