D OR D?
Mrs. Harrell stirred sugar into lemonade. What happened to the sugar?
The sugar dissolved
If I wanted to separate the salt from the Atlantic Ocean, what would I use to do so?
A filter
The jet engines of a moving plane exert a force to make the plane travel forward at a constant speed. What is likely to happen if the engines exert a greater force?
It will speed up
Mr. Harrell is pushing a heavy box up a ramp into a truck. If he takes some tools out of the box, what about the box changes?
Its mass
Its shape
Its color
Its perimeter
Its mass (weight)
A crane picks up a car. What force must the crane work against to lift the car?
Gravity
When she put the sugar in the lemonade, she stirred it with a spoon. Why?
The stirring helps to dissolve the sugar.
I want to know how many colors are in my favorite color of nail polish. Which form of chromatography would I use?
Color Changing Chromatography
Christian uses a fan on a hot summer afternoon. What changes if he turns the fan to a higher speed?
The air gets colder
Zoey pushes an empty box along the floor and it slides easily. Then she fills the box with rocks. She pushes the box again and finds that it is harder to push. Why is it harder for Zoey to push the box of rocks?
She is tired.
The mass has increased.
The mass has decreased.
There is air in the box.
The mass has increased.
Two teams are pulling on the rope with equal and opposite forces. What happens if the team on the left lets go of the rope?
The forces on the flag are no longer balanced.
The team on the right falls.
Mrs. Harrell is using powdered mix to make hot chocolate. She will boil some water and then stir in the mix.
What is the best way to make the powdered mix dissolve more quickly?
Quickly stir the mix
Christian emptied out a piggy bank and got a mixture of all different kinds of coins. He wants to separate them by kind.
Which physical property should he use to easiest separate the coins?
Shape
What can you do if you want to quickly lift a heavy rock?
Use greater upward force
Use greater downward force
Decrease the force of gravity
Increase the amount of air resistance
Use greater upward force
Sarah hits a baseball during an after school game. What can she change to make the ball go farther?
Swing the bat with more force
Juan pulls a rope to the left and Ben pulls the rope to the right. The rope stays in the same position. Why does the rope not move?
The forces are equal
The forces are balanced.
Which of these will NOT dissolve in water?
salt
sugar
olive oil
baking powder
olive oil
Jaedyn and Zoey are experimenting with a mixture of sugar and sand. They add water and stir thoroughly. How can they separate the sand from the mixture?
Pour mixture through filter
Jaedyn is building a birdhouse. She is nailing on the roof. It took four hits to drive in the first nail. If she hits the second nail with greater force, what is most likely to happen?
The nail will go in faster.
What is the difference between mass and volume?
Mass is how much something weighs and volume is how much something can hold
To walk across a beam without falling, you must have a ___________________ force (Hint! It starts with 'B')
balanced
What is the difference between dissolving and disappearing?
Dissolving particles spread out in the substance and can be separated.
disappearing particles cannot be separated and form a new substance.
Matthew has a big box with a mixture of paper clips. Some are metal and some are plastic. The plastic paper clips come in four different colors. Which is the best property for Matthew to use to quickly separate the metal paper clips from the plastic paper clips?
Magnets
A sailboat moves because the wind exerts a force on the sails. What must be true for the speed of the sailboat to increase?
The speed of the wind increases
Christian pushed his little sister on a swing and then watched her move up and down. What happens when Christian pushes an older and heavier child with the same force?
The heavier child does not go as high.
The pull and push on an object is known as...
Force