Motion and stability
What is the role of gravity in object motion?
It slows down the object
Above is a series of pictures taken as a pitcher of ice changed to liquid water. What will be true of the weight of the pitcher in the first and last pictures of the series? Why?
It will be the same in both pictures.
Mass of 100 grams. What would be the total mass of the substance formed ?
A.100 grams
B. 150 grams
C. 250 grams
D. 300 grams
100 grams
In an experiment to study the effects of gravity, which of the following variables should remain constant?
Mass of the object
What can you infer from the chemical reactions between vinegar and baking soda?
A new gas is produced
Which is most responsible for the changes in the season?
A. the jet stream
B. the ocean currents
C.The distance from Earth to the sun
D. the tilt of Earth on its axis
The tilt of earth on its axis
Which the following best describes the motion of an object at rest?
Its speed is zero
Is mixing salt and water considered a physical change or a chemical?
Physical Change
What force causes objects to slow down?
Friction
A student hypothesizes that increasing the weight of an object will decrease its speed. How could they investigate this hypothesis?
By conducting experiments with different weights.
If you were to graph the temperature changes of different materials when heated, which type of material would show the steepest increase in temperature?
Metal
Which item will require the most force to move?
A.An empty wagon
B. A wagon full of bricks
C. A wagon full of oranges
A wagon full of feathers
B. A wagon full of of bricks
What best describes the direction of Earth's gravitational force?
A. It pulls objects closer together
B. It pulls objects closer to earth
C. It pulls objects away from the air
B. It pulls objects closer to earth
After analyzing the data from an experiment comparing the insulating properties of different materials when heated, what conclusion can be drawn?
Different materials have varying insulating properties when heated
After throwing a basketball through the net, Anna observed the ball as it hit the ground. Which is most likely responsible for the ball hitting the ground?
A. Friction
B. mass
C. Gravity
C. Gravity