Vocab I
What is the force of attraction between all matter?
Gravity
What are dark shapes created when an object blocks light?
Shadows
If substances are mixed and then they become new and different substances, they have gone through a ...
Chemical reaction
What time of year are shadows the longest?
Winter!
Why do we have day and night?
The Earth orbits on its axis.
What is the smallest piece of matter that has the properties of an element?
Atom
What is something that happens in a regular and repeated way?
Pattern
What has three subatomic particles? (protons, neutrons, electrons)
Atom
Why are shadows longer in the winter than in the summer?
The sun is at a lower angle in the winter and higher in the summer.
What happens to length of the day as we move from summer into winter?
They get shorter.
Mass
What is a period time characterized by specific weather patterns and by the length of day and night?
Season
What is a collection of planets and other objects that orbit a star?
Solar system
Why do shadows change over the course of a day?
The position of the sun.
Why are there seasons?
What is the size, extent, or importance of something relative to something else?
Scale
What is a change that does not affect the chemical structure of a substance?
Physical change
Weight
What does the Earth orbit the sun?
Gravity
Explain conservation of matter.
Answers will vary.
What is a change that rearranges the atoms of the original substances into a new substance that has different properties from the original substances?
Chemical reaction
What is a theory that states atoms are not created or destroyed during a chemical reaction?
Conservation of matter
What is the relationship between the sun, Earth, and moon?
The moon orbits the Earth. The Earth orbits the sun.
Substance A and Substance B are added to a test tube with a cap. The mass of the bottle and substances together is 10 grams. Write a hypothesis for what you think the mass will be after the chemical reaction.
Answers will vary.