Which is a way to conserve water?
use the water hose to clean the sidewalk instead of a broom
water plants in the early morning
wash only a few clothes in the washing machine at a time
take a bath instead of a short shower
What is a way to conserve water?
limit your drinking water each day
use rainwater collected in a barrel to water plants
turn off the lights when you leave a room
let the water run while you brush your teeth
What is a way to conserve water?
buy water in bottles instead of using the sink
water your plants in the middle of the day
use a paper towel to clean dishes instead of soap and water
turn the water off while you brush your teeth
Which is a body of saltwater?
lake
ocean
pond
river
What is freshwater?
water that comes in plastic bottles
water with no dirt or trash in it
water with almost no salt content
water in oceans
Which surface provides the most friction?
glass table
ice
sandpaper
tile floor
Which surface provides the least friction?
a carpeted floor
a ramp with rough sandpaper
a gravel road
an icy road
What is the effect of friction on a moving object?
it always changes the direction of the moving object
it slows and stops the object
it causes the object to speed up
it has no effect on the object
Which is a an example of balanced forces on an object?
a kid on a swing going back and forth
a rollercoaster going down a hill
a car parked in a driveway
an airplane slowing down to land
What is an example of balanced forces on an object?
a car slowing down to stop at a red light
a train moving on a straight track at 35 miles per hour
a person speeding up on a bicycle going down a hill
a vase falling off a shelf
What is the effect of unbalanced forces on a moving object?
it maintains the same speed and direction
it can only change speed, but not direction
it changes speed or direction
it can only change the direction, but not speed
What can best fit in box B?
homogeneous mixture
matter
compound
element
What can best fit in box C?
element
compound
homogeneous mixture
matter
Which combination of substances creates a solution?
sand & salt
sugar & water
sugar & salt
sand & water
Which is a contact force?
applied force to a box to push it across the floor
a skydiver free-falling to the ground
a magnet picking up a paper clip
a baseball falling back to the ground
Which is a noncontact force?
an apple falling to the ground from a tree
a cat pushing a glass off a table
a car's brakes causing the car to stop
pedaling a bicycle
