Unit 1/2
What is one SAFE thing you should do in a lab?
(many responses accepted)
What is the definition of speed?
A change in the position of an object over time.
The distance an object travels divided by how much time it takes to get there
The amount of space between two objects
How long it takes to do something
2. The distance an object travels divided by how much time it takes to get there
Give an example of SOUND energy
(varied answers, must make noise)
Is Ice Melting a Physical or Chemical Change and WHY?
Physical Change because it is still WATER
Where are the electrons found in an atom?
Around the outside
In the shells
Is this an observation or an inference?
It looks like the lion might attack us, he is showing his teeth
Inference
What is motion?
A change in the position of an object over time.
The distance an object travels divided by how much time it takes to get there
The amount of space between two objects
How long it takes to do something
1. A change in the position of an object over time.
Why are Gamma Rays DANGEROUS?
They make us confused
They can cause cancer
The cause germs
They make the sun brighter
2. They can cause cancer
Is Fireworks exploding a Physical or Chemical Change and WHY?
Chemical Change because it's no longer fireworks after it's exploded, changes form
What charge do Protons have?
1. Positive
2. Negative
3. Neutral
1. Positive
Is this an observation or an inference?
The flower is pink
Observation
A force is….
The amount of matter in an object
Push or a pull
Tug or a knot
An object not moving
2. Push or a pull
What part of the wave is the TROUGH
Which phase of matter is this going through?
(solid → liquid)
Melting
What is an atom?
Solid, Liquid or Gas
The building block of matter, the smallest part of an element
A piece of paper crumpled up
An electron cloud
2. The building block of matter, the smallest part of an element
Is this a correct hypothesis statement? Yes or no and WHY
If I water the plants each day, then they will grow because water is essential to plant growth
Yes!
It uses the words "if...then...because"
Give an example of FLUID friction
(varied answers, must include water)
What is ENERGY?
Doing your schoolwork
The ability to lay down and rest
Not being tired
The ability to do work
4. The ability to do work
Carbon Dioxide (C02) is a…
Element
Compound
Mixture
Allotrope
2. Compound
Where are neutrons located in the atom?
In the nucleus
Inside the atom
What three words must you have in a hypothesis statement?
If...then...because
Give an example of Rolling Friction
(varied answers, must include wheels/something that rolls)
What type of energy conversion is a LAMP?
Varied answers, some acceptable ones:
Electrical-Heat
Electrical-Light
Which of the following has a definite shape and a definite volume?
Gas
Liquid
Solid
Plasma
Solids!
What is the charge of a Neutron?
1. Positive
2. Negative
3. Neutral
Neutral! (NOT negative! Electrons are NEGATIVE because they are MAD they are outside the nucleus!)