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Students are studying daily ozone levels near a school of asthmatic children. In order to have unbiased results, they made a questionaire for all to fill out at school and didn't mention asthma or ozone. What else could they do to increase accuracy?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
Trina wanted to find out which of her rubber balls can bounce the highest. She dropped the first ball on the cement sidewalk, and the second ball on the grass. How could she improve her experiment?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
You have a dark-colord piece of cloth and a light-colored piece of cloth. What would be the best way to determine which piece of cloth absorbs the most heat?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
Our understanding of the universe has changed greatly over time. Which explains why this has occurred?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
Which of the following statements is a example of a correctly written, testable hypothesis?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
Jeremiah has been studying the experiments performed by Gregor Mendel in his study of inheritance patterns. He decides that he would like to test the inheritance patterns of tall and short pea plants. Which statement should be his hypothesis?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
Alfred Wegener theorized that continents drift apart from one another and did so in the past.At first, scientists dismissed Wegener. Which of the following helps prove the Continental Drift Theory?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
Which of the following is a qualitative observation?
New scientific discoveries lead to new theories.
bounce both balls on one of the surfaces
The classroom walls are white.
Fossils of the same species are found on the east coast of South America and weat coast ofAfrica.
If a truck is heavily loaded, then it will use more gasoline than an empty truck.
repeat the study at all the schools in the city
Place each cloth under the same type of lamp for the same time period.
if a purebred tall plant is crossed with a purebred short plant, all the offspring will be tall
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