Physical 1
An eraser falls off a table. What moves the eraser toward the floor?
A. mass
B. speed
C. friction
D. gravity
D. Gravity
If 5 grams of water is added to 5 grams of salt, how much salt water will be made?
a. 10 grams
b. 5 grams
c. 0 grams
d. 25 grams
A. 10 grams
Which investigation will best test the effects of gravity on moving objects?
A. pencils falling from the same height
B. balloons floating upward from the same height
C. a bicycle speeding up on a flat surface
D. a ball slowing down on a flat surface
A. pencils falling from the same height
4 solid items, each with a different mass, are moving at the same speed. Which item would require the most force to stop its motion?
a. a mass of 20 lbs
b. a mass of 10 lbs
c. a mass of 2 lbs
d. a mass of 3 lbs
a. a mass of 20 lbs
A rocket is traveling toward space. What force must the rocket act against as it moves away from Earth?
A, Inertia
B. Gravity
C. Magnetism
B. Gravity
Anna ran 100 meters in 20 seconds. What was her average speed?
A. 2 m/s
B. 5 m/s
C. 20 m/s
D. 25 m/s
B. 5 m/s
On a distance and time graph, which type of line would represent an object that was stopped?
a. a diagonal line
b. a horizontal line
c. no line
d. a line that goes up and then comes down
b. a horizontal line
When added to a smooth road surface, which would create the greatest amount of friction for a car?
A. Ice
B. Rain
C. Sand
C. Sand
Which is the best example of a new substance forming?
A. lighting a match
B. cutting a piece of paper
C. popping a balloon
D. hitting a nail with a hammer
A. lighting a match
Cris walked for 45 minutes. He saw that he
traveled further in the first half of his walk
than in the last. What can he conclude about his walk?
a. He was walking at a constant speed
b. He walked away from home, then back
c. His speed was faster the first half of the walk
d. He walked over a lot of hills
c. His speed was faster the first half of the walk
Which best represents the relationship between force and the mass of an object?
A. The greater the force, the smaller the object.
B. The smaller the force, the smaller the object.
C. The force on an object determines what density it has.
D. The greater the mass of an object, the greater the force needed to move it.
D. The greater the mass of an object, the greater the force needed to move it.
Students observed a piece of iron change from shiny to rusty. What caused this change?
A. Chemical Reaction
B. Heat Reaction
C. Cold Reaction
D. Physical Reaction
A. Chemical Reaction
What would happen to metal tracks during the summer?
a. change in color
b. increase in length
c. decrease in length
d. conduction
b. increase in length
Aubrey rolls a marble down a ramp. Which will most likely happen when the marble hits the wall?
A. It will move faster.
B. It will stop moving.
C. It will travel at the same speed.
D. It will travel in a different direction
D. It will travel in a different direction
Jason fills a glass container completely with water and screws the lid on tightly. He places the container in a freezer. Which will most likely result?
A. The container will prevent the water from freezing.
B. The water will freeze and take up less space in the container.
C. The water in the container will expand when it freezes and cause the container to crack.
D. The container will absorb heat from the water, causing it to crack.
The water in the container will expand when it freezes and cause the container to crack.