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Q 1/10
Score 0
The gravitational force of the Sun is strong enough to hold all the planets of the solar system in orbit many millions of miles away. Which BEST describes why objects having far less mass on the surface of these planets are not pulled off and into the Sun?
45
The objects have too little mass to be affected by the Sun.
The objects have more mass on the planets than on the Sun.
The objects are more strongly affected by the gravity of the planet on which they are found.
The objects are held by the greater combined gravity of all the planets.
Q 2/10
Score 0
Which investigation will BEST test the effects of gravity on moving objects?
45
a bicycle speeding up on a flat surface
a ball slowing down on a flat surface
balloons floating upward from the same height
pencils falling from the same height
10 questions
Q.
The gravitational force of the Sun is strong enough to hold all the planets of the solar system in orbit many millions of miles away. Which BEST describes why objects having far less mass on the surface of these planets are not pulled off and into the Sun?
1
45 sec
Q.
Which investigation will BEST test the effects of gravity on moving objects?
2
45 sec
Q.
A rocket is traveling toward space. What force must the rocket act against as it moves away from Earth?
3
45 sec
Q.
Which investigation BEST measures the gravitational force on a toy car?
4
45 sec
Q.
Which is a force that keeps the planets in orbit around the Sun?
5
45 sec
Q.
Allen pushes a toy car across three different surfaces. He pushes the car across a wooden floor, a tile floor, and a carpeted floor. He notices it is hardest to push the toy car across the carpeted floor. Which is the MOST likely reason it is hardest to push the car across the carpet?
6
45 sec
Q.
Lilly has a flat piece of paper and a ball of paper. She drops both papers at the same time from the same height. The ball of paper hits the ground first. Which force acts on the flat piece of paper that slows it down?
7
45 sec
Q.
A push or a pull on an object is an example of _____.
8
45 sec
Q.
Gravity on Earth is caused by
9
45 sec
Q.
Christina kicks a ball. The ball moves faster when she kicks it on the concrete sidewalk than when she kicks it on the grass. Why does the ball travel slower on the grass than the sidewalk?
